Answer:
Correct answers are:
B. Nearly every American colony had its own elected assembly that passed laws for the colonists.
C. The southern colonies, with their large tobacco and rice plantations, came to rely increasingly on slave labor.
Step-by-step explanation:
Option A is not correct as their focus was not on production of these precious metals, but rather the production of the products mentioned in option C.
Option B is correct as colonies would after their creation implement certain laws that would apply for them. That was later a basis even when the States were created for their political autonomy.
Option C is also correct as slave labor was a basis for the development of southern colonies, and later was one of the main disputes inside the United States.