Answer:
D) The United States government blockaded Cuba so outside powers could not interfere with its internal conflict.
Step-by-step explanation:
The United States had to struggle extremely hard to win Independence during the Revolutionary War, and we were only able to get free of Britain once we got aid from France. Thus, we felt the need to protect and aid other countries in the Americas struggling for their Independence. We even sent a treaty to Europe telling them that if they came to the Americas they would be viewed as enemies and we could do as we pleased with them. Long story short, we felt the need to protect Cuba due to our own struggles and experience with trying to gain Independence and succeeding due to another nation's help.