In addition to replacing the president if necessary, it's the duty of the vice president to a. serve as speaker of the house. b. serve as liaison to the judicial branch. c. preside over the senate. d. review laws before the president signs them.

In adittion to replacing the president iff necessary, it's duty of the vice president to: C. preside over the senate.

Explanation:

To understand this answer we need to review all of the options.

a.- The house elects its speaker so this is incorrect.

b.- The vice-president doesn't serve as the liaison to the judicial branch. The judicial branch liaisons with the president are chosen by him and the vice-president is not one of them.

c.- The vice-president can preside over the senate however his or her role doesn't have a breakpoint vote power.

d.- This is incorrect, laws pass to the senate before the president. Then he or she reviews them by himself or herself.

the answer is b.

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