Answer:
The correct answer is C water routes for trade helped colonies prosper
Step-by-step explanation:
C is correct answer because these colonies were created on the Eastern Coast so they could be easily connected with Europe, namely Britain through water routes. Through it they made all the important commerce in that period.
A is not correct because they weren't able to engage themselves that much in agriculture in that region as in trade and commerce.
B is not correct because health was a question of medical progress, not just weather condition.
D is also not correct, because they were afraid to move much from the coast, because were in danger of Natives.