How were Dubček and Nagy similar?

B. They made serious efforts to improve their countries.

Explanation:

Dubček was a Soviet leader who wanted to impose many big reforms on the USSR and Nagy was the Prime Minister of Hungary who also wanted a lot of big changes. Dubek introduces a lot of democratic reforms. These democratic reforms included a free press, multi-party elections because in the USSR, there was really only one party for the longest, which was the Communist Party. Nagy swept democratic reforms and wanted freedom of press.  Also, it's correct on Edge2020.

the answer is

he used natural lighting to create convincing space and render solid forms.