Answer:
b.) Slaves from Africa were more readily available than slaves from European nations like Ireland.
Explanation:
Initially, many of the slaves that were transported to the colonies were of European origin. These were people who had been enslaved in their own nation, or who were desperate to escape poverty. However, as the demand for slaves grew, European slaves were not enough to meet the demand. Therefore, slave traders began to import African slaves, as they could be obtained in much greater numbers.