Question

He would not have failed if he _____ enough money.

• A. would have
• B. had had
• C. would have had
• D. was having

Answer 1

Answer:

B. had had

This is a Third Conditional sentence, used to talk about an unreal or impossible situation in the past.

Structure:

• If + subject + had + past participle, subject + would have + past participle

Here:

• If he had had enough money (past unreal condition)

• He would not have failed (imagined past result)

Why "had had"?

• The first "had" is the past perfect auxiliary.

• The second "had" is the past participle of the verb "have."

So:

• had had = possessed (in the past).