Question

this picture shows the leaders of the big three meeting in tehran, iran, in 1943.
in this picture, franklin roosevelt is seated
○ at the left.
○ in the center.
○ at the right.
○ not present.

Explanation:

The Tehran Conference (1943) included the "Big Three": Joseph Stalin (left), Franklin D. Roosevelt (center), and Winston Churchill (right). The image matches this lineup.

Answer:

in the center.