Question

9/65
why do reproductive structures often come in pairs?
the body has designed
a back up structure.
the body accidentally
makes too many
the body is designed to
be symmetrical.
the body be crazy like
that.

Explanation:

In biological terms (subfield: Biology under Natural Science), many organisms, including humans, have bilateral symmetry. Reproductive structures (and other body structures) often come in pairs as a result of this symmetry, which is a fundamental aspect of body plan design for functional and evolutionary reasons. The other options are not scientifically valid: "backup structure" is not the main reason for pairing in reproductive structures, "accidentally makes too many" is incorrect as development is regulated, and "be crazy like that" is not a scientific explanation.

Answer:

C. The body is designed to be symmetrical.