Answer:
Correct answer is defensive.
Step-by-step explanation:
Defensive is correct answer as both Monroe and Roosevelt believed that their role is to protect countries of Latin America from European imperialism, and that they can intervene there in order to protect countries of Latin America from European countries.
Aggressive is not correct as they didn't exercise any type of aggression towards them.
Colonial is not correct as they were protecting them from colonization.
Belligerent is not correct as it similar to aggressive policy, that they didn't exercise, as we mentioned.