Multiple choice

People who reverse the letters of words_______ to rwad suffer from dislexia.

  1. if they tried

  2. when tried

  3. when trying

  4. if he tries

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

The phrase "when trying" is a reduced adverb clause (short for "when they are trying") that correctly modifies the action of reversing letters. "When tried" is passive and does not make sense here, while "if they tried" uses an incorrect tense sequence.