Answer:
the correct answer is A. Each are nominated by their state governments.
Step-by-step explanation:
After the primaries and caucuses, each major party, Democrat and Republican, holds a national convention to select a Presidential nominee. The Presidential candidates campaign throughout the country to win the support of the general population. On election day, people in every state cast their vote.
The party's presidential nominee is chosen primarily by pledged delegates, which are in turn selected through a series of individual state caucuses and primary elections. Pledged delegates are classified into three categories: At-large pledged delegates are allocated and elected at the statewide level.