Which of the following best describes a species?
a. organisms that can reproduce infertile, nonviable offspring
b. organisms that can breed and produce viable and fertile offspring
c. organisms that live in similar habitats
d. all of the above are correct.

correct answer: b). organisms that can breed and produce viable and fertile offspring

a species is defined as the group of related organisms that are similar to each other and they are capable of interbreeding with each other in order to produce fertile and viable offspring.

although appearance is important in order to identify the species it does not define the species, an organism may look different and yet they can be the same species.

example: chimpanzee, gorilla, chicken etc.

answer; the above answer to the above statement is (true)