Answer:
C. It enacted the idea of nullification and declared the law null and void
Explanation:
The tariff of abominations, effectively increase the import tax for foreign products. This legislation affected a lot of states in the south which at that time imported large portion of their raw materials from Great Britain and France.
In response to this, Several southern states outright refused to follow the federal legislations regarding this tariff.
They argued that the Tariff of Abominations was unconstitutional and they refused to implemented within their region. This refusal is what commonly considered as 'Declaring the law null and void'
Answer: Voters can be overwhelmed and vote by randomly guessing.
It puts too much of the onus of learning about the issues and candidates on voters.
It can include, state, local, municipal, national and federal candidates.
Sorry, I'm not sure.
I would suggest asking a trusted adult or teacher or redoing the lesson. Cheating isn't a good path: you will not do well in the future if you always search for answers on the internet.
B. Appeal to as many voters as possible
A general election is the main election in which the officials are chosen by vote (popular or electoral) for office. This is different from the primary election which decides the candidates who will represent each political party in an election.