Currently, two extant elephant species (X and Y) are placed in the genus Loxodonta, and a third species (Z) is placed in the genus Elephas. Thus, which statement should be true?
Species X and Y are not related to species Z.
A) Species X and Y share a greater number of homologies with each other than either does with species Z.
B) Species X and Y share a common ancestor that is still extant (in other words, not yet extinct).
C) Species X and Y are the result of artificial selection from an ancestral species Z.
D) Species X, Y, and Z share a common ancestor, but nothing more can be claimed than this

A. Species X and Y share a greater number of homologies with each other than either does with species Z.

Explanation:

In taxonomy,  living organisms are placed into groups according to their similarities.

Genus is a classification group above of species. It consists of species that are closely related.

For the species X and Y to be placed in the same genus, they must be sharing a greater number of similarities or homologies compared to species Z.

Species Z does not have greater similarity with either Species X or species Y

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy