GMAT Sentence Correction (SC) | Which of the following best completes the passage below? the

Experts, could you please comment on why C & why not D here.

C. a reduction in the television coverage of opinion polls during election campaigns
D. the publication and distribution of voter-education literature to inform the public about each candidate's position on the major issues

My logic:
Reducing media coverage of "who wins" or increasing coverage of "candidates' position on various/major issues" - could both work as an answer to the question.

Since, the argument