Which of these interest groups would probably have the greatest influence on the passage of a bill in Congress?

a small group of conservative women favoring a bill that would limit abortion
a coalition of arms dealers trying to influence the Defense Department to buy their products
an anti-gun group lobbying for a bill requiring background checks in the wake of an assassination attempt on the president
a prominent environmental group demonstrating in front of the White House against a bill that would reduce penalties for polluting

In the wake of a presidential assassination attempt, an anti-gun group campaigning for legislation requiring background checks is likely to have the biggest impact on whether a law is passed by Congress.

Thus Option C is correct.

What is Bill in congress?

Legislative proposals made to Congress are known as bills. Starting at the beginning of each Congress, bills are given a number in the order they are introduced in each chamber (first and second sessions).

Private bills deal with specific issues that impact individuals and organizations, such as complaints against the government, while public laws deal with issues that affect the broader public or specific groups of residents.

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