C. Colonial
The start of a colonial period is marked by the foundation of the new colonies. It’s a period where the country was subject to colonial rule/power.
It is not industrial period as that refers more to inventions/technology. A settlement is a place where people settle-the colonies were in the process of settling in an area. Colonies are established and able to grow power, culture, etc. the end of a colonial period is when the country is no longer under colonial rule.