Question

Fill in the blank with a suitable option:

Once he has signed the agreement, he won't be able to ________.

• A. back up
• B. back in
• C. back at
• D. back out

Answer 1

The correct option is D back out

Phrasal verbs are formed with a verb and another element, like a preposition.

Option D: 'Back out' is a phrasal verb that means 'to withdraw from a commitment'. It is relevant to the given sentence as it's about an agreement that the person 'he' won't be able to withdraw from.

Hence this option is correct.

Option A: 'Back up' is a phrasal verb that means '(of a vehicle) to form a queue to avoid congestion'.

Option B: 'Back in' relates to poker and means 'to bet after having passed the first opportunity'.

Option C: 'Back at' is not a phrasal verb and does not have a meaning complete of its own.

These meanings are not relevant to the given sentence, hence options A, B and C are incorrect.