What scientist do that is the basis for their investigations

Answer any resource, such as wood or solar energy, that can or will be replenished naturally in the course of time;

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!

Ithink the second one is correct