IDNLearn.com: Your trusted platform for finding precise and reliable answers. Ask any question and receive comprehensive, well-informed responses from our dedicated team of experts.

What is a beneficial mutation?

a. A mutation that changes the nucleotide base of DNA from an A to a T.

b. A mutation that increases an organism's fitness

c. A mutation that decreases an organism's fitness

d. A mutation that makes no change to an organism's fitness

(WILL MARK BRANLIEST)