The role of the president pro tempore of the senate is

(a) to be the head in the senate.
(b) to act in the president of the senate’s absence.
(c) to act as assistant to the party leader when needed.
(d) to act as a ceremonial role within the senate.

Correct answer choice is :

D) To act as a ceremonial role within the Senate.

Explanation:

The President pro tempore of the United States Senate is the second leading ranking leader of the United States Senate. Article One, Section Three of the United States Constitution renders that the Vice President of the United States is the President of the Senate, and mandates that the Senate must elect a President pro tempore to act in the Vice President's inadequacy. Unlike the Vice President, the President pro tempore is an elected member of the Senate, ready to express or vote on any matter. Elected by the Senate at large, the President pro tempore has experienced many events and some short commands. During the Vice President's inadequacy, the President pro tempore is authorized to control over Senate gatherings.

he sent troops to protect the students as they entered the school.

your answer will most likely be a.