Question

according to the biological species concept, members of the same species are ______ each other.
○ closely related to
○ able to interbreed in nature with
○ capable of producing fertile offspring with
○ all of these are correct.

Explanation:

1. The Biological Species Concept defines a species as a group of organisms that can interbreed in nature to produce fertile offspring. Organisms of the same species are also closely related.

• "Closely related to": Members of the same species share a recent common ancestor, so they are closely related.
• "Able to interbreed in nature with": A key part of the Biological Species Concept is the ability to interbreed in natural conditions.
• "Capable of producing fertile offspring with": The main criterion of the Biological Species Concept is the ability to produce fertile offspring when interbreeding.

Since all the first three options are correct descriptions of members of the same species according to the Biological Species Concept, the last option "All of these are correct" is the right choice.

Answer:

D. All of these are correct.