Let's take a look at the name: colonies. If a land is a colony, it is a colony of something, that is, there is some other land that has control over it: in this case this was Great Britain: Great Britain had claims and control over the colonies.
I am pretty sure that it is C, I am not 100% sure.
Answer:
Slaves served in households, agriculture, mines, the military, workshops, construction and many services.
Explanation:
Your date chart must have to be like an arrow. At the begining, put the farest date with some globals informations. Then, do an increasing chart, where you have to be proportional with the times and the length. At the end you will have the earliest date (like nowadays).
Hope it helps !