# JavaScript, 31 bytes (SAFE)

## Code
    '([(102)])prenatal.gecko'tonsil

## Output
    j

Should work in any browser console, although it is a standalone program.

## Original source

>! `alert('0acegnos'.link(top)[12])`<br />
>! The characters in the string are red herring, so it wouldn't be obvious what functions were used. It uses the little-known [link function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/link), which makes an HTML &lt;a> element. The `top` object is converted to a string as `[object Window]`, and added as the &lt;a> link, the twelfth character of which is j.