Answer:
The correct answer is option B. "try to persuade the president to veto the bill".
Step-by-step explanation:
A lobbyist is a person which aim is to influence over public officials opinions and members of legislative bodies to achieve the interests of the institution they worked for. If a bill is passed in Congress and a lobbyist does not support the bill, the first thing that a lobbyist would do is to try to persuade the president to veto the bill. The lobbyist would be making his or her job at influencing the opinion of the president by giving supported arguments of why the bill does not help their purposes.