Question

A person who leads others in any field is called a/an

Answer 1

He is called a person not an person......

Explanation:

SO YOUR ANSWER Is A

Answer 2

A person who leads others in any field is called a/an Pioneer

EXPLANATION:  

A pioneer is an individual who is an innovator, sees potential, and who is agreeable to try novel things. A pioneer thrusts precincts to progress an idea or a cause or break a record. These people have met success in their respective field, at times by overpowering abundant challenges.

Pioneers are the people who are the first amongst the earliest in any domain or field of inquiry, initiative, or progress, which is an individual or group which originates or facilitates in opening up a new line of activity or thought or a technical development or a new method