Question

what was the most common trait of those targeted by the soviet government under stalin?
they opposed communist theory.
they wanted to revise pure communism in some way.
they had provided support to the germans during world war i.
they threatened stalins power in some way.

Explanation:

Under Stalin, the Soviet government targeted individuals who threatened his power. Opposing communist theory or revising communism isn't the main trait, and supporting Germans in WWI is irrelevant. Those who posed a threat to Stalin's authority (like political rivals) were targeted in purges.

Answer:

D. They threatened Stalin's power in some way.