Answer:
B) to help elect candidates to local and national office
Step-by-step explanation:
The state party committee will be the one that is responsible for daily operational of a certain political party within a state level.
Locally, state party will coordinate list of candidates that they can use to meet up with citizens and address their complain . This usually about the infrastructures that exist in their neighborhood. (such as broken traffic signs, negotiation to form new local parks, etc)
On national level, the state party committee will play a major role in the competition to obtain senates position from other political party. If they obtain the position as the senate, the party that the committee represent will garner more influence in determining the types of federal policies and might be made.