Answer:
b. they were treated cruelly, but many were able to survive
Step-by-step explanation:
a is false because they had to face new challenges
c is completely false because the emancipation proclamation and the civil war hasn't begun yet. Slaves were considered property not people
d isn't true because most Africans couldn't swim. so when they jumped overboard or were thrown overboard, they drowned. and also many had never before so they had no sense of ocean directions