Which statements describe a feature of the presidential system?

The correct answer is B. In the presidential system, the head of state is also the head of government.

Explanation:

In a presidential system, the president is both head of state and head of government, in contrast to the parliamentary and semi-presidential systems, where these functions are separate and there is the position of prime minister, who is the head of government. The power of the head of state is therefore stronger than in other systems, but critics speak of an "imperial presidency". The president is the only representative of the executive, so his cabinet is not part of it, and in most countries with this system he has the possibility to veto congress proposals, to appoint judges and to pardon and is often also commander-in-chief of the army.

question 1:

senate and house of representatives

i would try to answer the second question but i’m not 100% positive but i hope i

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.