What fact would you select to support your understanding of world war ii?
a.england and the soviet union were not allies during world war ii.
b.england and the soviet union were allies during the civil war.
c.england and the soviet union were allies during world war ii.
d.england and the soviet union hated each other.

C. England and the Soviet Union were allies during World War II.

Explanation:

This is the statement about World War II that is correct. It is true that England and the Soviet Union were allies during World War II. In fact, these countries, along with the United States and several others, were called the Allies. They were fighting a war against the Axis, which included Japan, Italy and Germany. Both Great Britain and the Soviet Union were instrumental in ending the war.

The answer is option D. Present perfect. The present perfect tense indicates an action that started in the past and is still happening now.
For example:
-I have been answering these questions since last weekend. 
-We have been living here for 10 years.