The executive office of the president is commonly called “the presidents right arm” because it hosts agencies composed of which of the following?

The executive office of the president, or "president's right arm", hosts many federal agencies which are responsible for many important functions in government. For example, the Department of Agriculture (USDA), Department of Commerce (DOC), Department of Defense (DOD), Department of Education, Department of Energy (DOE), Department of Health and Human Services (DHHS), Department of Homeland Security (DHS), and Department of Housing and Urban Development (HUD) are all federal agencies that are a part of the executive branch.

C.It is a combination of hills, mountains, and plains.

Explanation:

Italy is a Mediterranean country with a rugged geography. It has some large important mountain ranges: the Alps, the Apennine Range (southern and northern), combined with rivers and valleys.