I need help please<33. 20 points

At age 29 in 1776, Bernardo de Galvez was appointed governor of Spanish Louisiana. One year later, King Carlos of Spain gave him an important assignment: manage the Spanish smuggling operation to supply the Continental army. Spain had decided to secretly back the colonists because Britain was growing in power, and Spain felt that this was a threat to their interests in the Americas. The American rebellion gave them an opportunity to weaken their old opponent.

According to the passage, why was Spain helping the colonists?

Great Britain’s growing power threatened Spain’s interests.
Spain was making money selling supplies to the Continental army.
Great Britain was unable to sell supplies to the Continental army.
Spain wanted to weaken the power of the Continental army.

I WILL MARK BRAINLIEST WHEN I CAN <3