Question

spain helped the colonial army during the american revolution by
building ships for american use.
keeping the british navy occupied.
forcing general cornwallis to surrender.
trapping the british on a peninsula at yorktown.

Explanation:

Spain's primary military support to the Colonial army in the American Revolution involved engaging British forces in other regions, which drew away and occupied British navy resources, preventing them from fully focusing on the colonies. The other options are incorrect: building ships was not their key contribution; the French navy trapped the British at Yorktown, which led to Cornwallis' surrender, not Spain directly.

Answer:

B. keeping the British navy occupied.