Communism is a political and social system based on a theory under which all forms of industry would be owned by
a. capitalists
b. the people as a whole
c. the tsar
d. individuals

They would be owned by the people as a whole - the correct answer is B. 

An interesting fact: countries with communist or socialist systems often have the word"people's" in their name, for example;

"People's Republic of Poland"  - historical name until 1989
"People's Republic of China" - current name

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Explanation:

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