Question

which region is considered a functional region?
a sahara deser
b \the middle east\
c european union
d amazon rainforest

Explanation:

A functional region is defined by a function or activity, like political, economic, or social organization. The European Union (EU) is a functional region as it has a unified economic and political system with shared policies, institutions, and functions. The Sahara Desert (A) and Amazon Rainforest (D) are physical regions (formal/vegetation - climate - based). "The Middle East" (B) is a perceptual region (cultural - subjective). So the EU fits as a functional region.

Answer:

C. European Union