The correct answer would be B.
Hope this helps!
Climatology is the branch of scientists
Saigon was renamed H0 Chi Minh city
Incas:
conquered by Francisco Pizarro
located in the Andes Mountains
worshiped the sun god, Inti
Aztecs:
conquered by Hernan Cortez
located in Central America
worshiped many gods, including Quetzalcoati
Because they where trying to decide if African Americans where worth a count in population.