The constitution gives which of the following powers to the vice president?
a. exercise broad executive power
b. lead his or her political party
c. preside over the senate
d. the power to declare war

The correct answer is C. The Constitution gives the Vice President the power of preside over the Senate.

Explanation:

The United States Senate is one of two chambers of the United States Congress, the other being the House of Representatives. In the Senate, each US state is equally represented by two members, regardless of their population. As a result, the total number of senators in the US Senate is one hundred.  

The senators' term of office is six years. Elections, however, take place every two years to choose approximately one-third of US Senate positions. The vice-president of the United States is the presiding officer of the US Senate legislative sessions, but he is not a senator, and as such does not vote, although he has a casting vote in the case of tied votes.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.