She () call Mike yesterday, but she forgot.

• A. Meant to
• B. Might have
• C. Would have
• D. Should have

Answer: (A)

Meant to expresses an intention or plan in the past that didn’t get carried out. Here, she had the intention to call Mike yesterday, but she forgot, so the action didn’t happen.

Why the others don’t fit: might have would indicate possibility or a hypothetical outcome, not a definite past intention; would have is used for conditional or hypothetical results; should have signals obligation or regret about what one ought to have done, which changes the meaning from a simple past intention to something like “it would have been good if she had X.”