R 3.2.2, 34 32 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

cat is the 297th thing in the base package, but 9 and 7 are prohibited. I think 322-23-2 is the most efficient way to calculate 297, but I may be wrong!

(Edit: I was wrong. Thanks to Albert Masclans for pointing out that 33*3*3 is more efficient. I also added the R version number since later versions of R will probably introduce more things into the base package.)

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[333*3*3])(letters[3-2])

R 3.2.2, 34 32 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

cat is the 297th thing in the base package, but 9 and 7 are prohibited. I think 322-23-2 is the most efficient way to calculate 297, but I may be wrong!

(Edit: I was wrong. Thanks to Albert Masclans for pointing out that 33*3*3 is more efficient. I also added the R version number since later versions of R will probably introduce more things into the base package.)

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[33*3*3])(letters[3-2])

R, 34 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

cat is the 297th thing in the base package, but 9 and 7 are prohibited. I think 322-23-2 is the most efficient way to calculate 297, but I may be wrong!

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[322-23-2])(letters[3-2])

R 3.2.2, 34 32 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

cat is the 297th thing in the base package, but 9 and 7 are prohibited. I think 322-23-2 is the most efficient way to calculate 297, but I may be wrong!

(Edit: I was wrong. Thanks to Albert Masclans for pointing out that 33*3*3 is more efficient. I also added the R version number since later versions of R will probably introduce more things into the base package.)

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[333*3*3])(letters[3-2])

R, 34 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[322-23-2])(letters[3-2])

R, 34 bytes

This is a tricky challenge in R, since the only function that will print without quotes and junk is cat, which contains an "a". We have to get it by indirect means. In a fresh R installation with no extra packages, the base package (in which cat resides) is the eighth in the search list (luckily 8 isn't prohibited!)

cat is the 297th thing in the base package, but 9 and 7 are prohibited. I think 322-23-2 is the most efficient way to calculate 297, but I may be wrong!

"a" is held in the first element of letters (alternatively, use LETTERS if you want "A") but since 1 is prohibited, we use 3-2 to get it.

    get(ls(8)[322-23-2])(letters[3-2])