7. Why are some people critical of these trading blocs?

Loss of Sovereignty. A trading bloc is likely to lead to at least partial loss of sovereignty for its participants. ...

Interdependence. Because trading blocs increase trade among participating countries, the countries become increasingly dependent on each other.

Explanation:

“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.

i would say your answer is a)

sorry if im wrong