Read the excerpt by former enslaved person Olaudah Equiano. The closeness of the place, and the heat of the climate, added to the number in the ship, which was so crowded that each had scarcely room to turn himself, almost suffocated us.

We were conducted immediately to the merchant's yard, where we were all pent up together like so many sheep in a fold [pen], without regard to sex or age.

Equiano’s account is evidence of which of the following?

the poor conditions under which enslaved people were transported and then sold
the presence of abolitionists on slave ships traveling from Africa
a slave revolt by the African captives that led to the restoration of their freedom
the presence of medical practioners aboard the ships to help reduce the mortality rate