Complete the sentence: Diana () enlist in the Army than the Navy.

• A. Would rather
• B. Would prefer
• C. Could
• D. Might

Answer: (A)

Expressing a preference between two actions uses would rather, followed by the base form of the verb. In this sentence, the verb after would rather is enlist, a bare infinitive. The comparison is then introduced with than, linking the Army to the Navy. This construction clearly communicates that Diana prefers enlisting in the Army over enlisting in the Navy.

The other options don’t fit as neatly because could and might express possibility rather than preference. Would prefer would work in principle, but it would require a slightly different phrasing (for example, would prefer to enlist in the Army rather than enlist in the Navy) to maintain natural grammar with the comparison.