The correct answer to the question is:
OB. The captives' deaths were covered by insurance.
Explanation:
The crew of the Zong ship threw some captive Africans overboard because they believed that if the captives died at sea, their deaths could be considered a loss covered by insurance. This tragic event, known as the Zong massacre, took place in 1781 when the crew made the cruel decision to sacrifice human lives for financial gain. This action highlights the inhumane treatment and disregard for human life that occurred during the transatlantic slave trade. It was a devastating and deplorable act that is remembered as a dark chapter in history.