Answer:
c. Lobbying
Step-by-step explanation:
Lobbying can described as the act of persuasion to influence a decision or legislation to go in their favor. Lobbying usually involves a group of people or an individual engaging in activities in an attempt to influence the decision of a government or the legislative arm, in order to have their interest represented by such decisions and legislations.
The example stated in the question, whereby a member of congress or a state legislator is contacted to seek their sponsorship or vote in favor of or against a specific bill is regarded as an act of lobbying.