Multiple choice general knowledge

What letter is invisible yet never out of sight?

  1. S

  2. T

  3. H

  4. I

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is a clever riddle about the pronoun 'I'. As a pronoun referring to oneself, 'I' is grammatically invisible (it's a function word, not a content word with concrete meaning) yet it's 'never out of sight' because the speaker saying 'I' is always present. The other letters (S, T, H) don't have this dual nature.