Question

a. puerto rico, cuba y república dominicana siguieron siendo dominios españoles.
b. puerto rico y cuba dejaron de ser dominios de españa.
c. estados unidos y españa se repartieron el mar caribe.
d. puerto rico pasó a ser parte de estados unidos.
e. puerto rico pasó a ser un estado de la unión de estados de estados unidos.

Explanation:

To solve this, we analyze each option based on historical facts about Puerto Rico, Cuba, and Spanish/American relations:

• Option a: Cuba and the Dominican Republic (then Santo Domingo) gained independence from Spain (Cuba in 1898, Dominican Republic earlier), and Puerto Rico was ceded to the US. So this is incorrect.
• Option b: Cuba gained independence (not just "left" Spanish rule; it became independent), and Puerto Rico was ceded to the US. The phrasing is inaccurate, so this is incorrect.
• Option c: The US and Spain did not "divide the Caribbean" as a whole. The Treaty of Paris (1898) transferred Puerto Rico, Guam, and the Philippines from Spain to the US, and Cuba gained independence. So this is incorrect.
• Option d: After the Spanish - American War (1898), under the Treaty of Paris, Spain ceded Puerto Rico to the United States. This is historically accurate.
• Option e: Puerto Rico is a US territory (commonwealth), not a state of the US union. So this is incorrect.

Answer:

d. Puerto Rico pasó a ser parte de Estados Unidos.