n addition to replacing the president if necessary, it's the duty of the vice president to A. serve as liaison to the judicial branch. B. review laws before the president signs them. C. serve as Speaker of the House. D. preside over the Senate.

In addition to replacing the President of the United States if necessary, it is the duty of the Vice President to serve and preside over the Senate of the United States. The VP also certifies the official vote count in the Electoral College.

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emilyadalex emilyadalex · Answer 2 · 2019-05-07T09:11:12-04:00

Answer:

D. Preside over the Senate.

Explanation:

Not only is the Vice President an important part of the Executive branch as he has the power to replace the President when required and serves as ceremonial assistant to the President, but he also plays an important role in the Legislative branch, more specifically, in the Senate, as Article I, Section 3 of the U.S. Constitution states:

The Vice President of the United States shall be President of the Senate, but shall have no vote, unless they be equally divided.

Thus, the Vice President serves as the president of the Senate and presides over the Senate's daily proceedings and it's the only member with the authority to cast a tie-breaking vote.