Multiple choice softskills communication

I have trouble

  1. to remembering my password

  2. to remember my password

  3. remember my password

  4. remembering my password

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

The verb phrase 'have trouble' is followed by a gerund (verb ending in -ing), not an infinitive. The correct construction is 'have trouble doing something,' making 'remembering my password' grammatically correct. Options A, B, and C incorrectly use infinitive or bare verb forms.