Final answer:
The population of the colonies grew by over 700% in the first century, primarily in the middle colonies, which indicates that answer d) Over 200% is correct.
Step-by-step explanation:
During the first century of colonial growth in British America, the population experienced significant expansion due to both natural increase and immigration. The middle colonies, which consisted of regions like Pennsylvania and Delaware, saw substantial population growth starting from around 63,000 in 1710 to approximately 520,000 by 1770.
This growth rate is extremely high, representing an increase of over 700%. Therefore, the correct answer to the student’s question about the population growth in the first century of the colonies is d) Over 200%.