Based on the chart and what you know of the columbian exchange, which statement best explains why people in west africa eat manioc?

As there are no choices given I will explain the main reason why Manioc which in popular terms is known as "Cassava" is eaten by people in West Africa.
Manioc or Cassava is a native food found in West Africa and that is part of their daily diet, it is eaten raw as well as roasted and its leaves are also cooked and eaten with boiled rice which in the local language is called "Plasis/Plasas" 

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.

he is a vloger now and he could't be vlogging everyday when he had to do the casting for minato.