What is the main way political parties are able to shape public policy?

They spend a large amount of money on advertising to alter citizens' perception of a topic.
They challenge each other to public debates to discuss topics of civic importance.
They work to get their members elected to positions where they create legislation.
They depend on special interest groups and individual citizens to spread their message.

They work to get their members elected to positions where they create legislation.

Explanation:

Political party is an organized group with people of same idea or same political position.

The primary responsibility of political parties at the local level is to encourage voter registration.

The members are not hired by the political party to work in office in order to shape the public policy. Honest leaders prohibit lobbyists from giving gifts to legislators.

Influencing the public opinion and forming political action committees are the strategies followed by the interest groups to shape the public policy.  

answer:

b species

explanation: