Select the most appropriate word to fill in the blank
The scientist, who is known for his ______ ideas on space travel, is much admired.

Options

A. ridiculous
B. anarchist
C. revolutionary
D. malicious

Explanation

Revolutionary means a person who produces great and different changes. The given question states about a scientist who is known for his new & changing ideas on space travel is much admired. Hence, ‘revolutionary’ will be the most appropriate answer.