Question

one reform khrushchev instituted was to
○ eliminate the secret police.
○ limit censorship to the media.
○ allow political prisoners to be freed.
○ open the country to foreign visitors.

Explanation:

During Khrushchev's leadership, one of his reforms was to allow political prisoners to be freed. This was part of his de - Stalinization efforts. He did not eliminate the secret police (it was still in operation, though its powers might have been adjusted in some ways). Censorship was not limited to the media; it still existed in various aspects of society. And opening the country to foreign visitors was not a major reform specifically associated with Khrushchev in the same sense as the freeing of political prisoners.

Answer:

allow political prisoners to be freed.