How did lenin’s death affect the political environment in the soviet union?

The correct answer to this open question is the following.

Lenin died on July 21, 1924. After all the activities that Lenin did, he left a legacy but his death also represented a transition period to another political situation that changed the life of Russia. Divisions, political disagreements, and differences followed Lenin's death and Russia lived moments of tension and uncertainty. There were many internal fractions in the Central Committee. After Lenin's death, Joseph Stalin, who had been the General Secretary of the Central Committee in the Communists party, increased his power and influence over rivals, included Trotsky, to be named the Prime of the Soviet Union.

question:  

the chart compares religious beliefs to us political party support.

religious beliefs and party support, 2012

this chart demonstrates that

a) more highly religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

b) more highly religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

c) more moderately religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

d) more moderately religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

answer: a.