The correct option is C Pragmatist
A pragmatist is a person who is guided more by practical considerations than by ideals. For example, "hardheaded pragmatists firmly rooted in the real world". Hence, Option C is correct. Among the rest of the options, plagiarist means a person who uses another person's ideas or work and pretends that it is their own, realist means a person who accepts a situation as it is and is prepared to deal with it accordingly, fundamentalist means a person who believes in the strict, literal interpretation of scripture in a religion. These do not express the intended meaning, hence incorrect.