Evolution Group of answer choices

a. must happen, due to organisms' innate desire to survive.

b. must happen whenever a population is not well adapted to its environment.

c. requires the operation of natural selection.

d. can happen whenever any of the conditions for Hardy-Weinberg equilibrium are not met.

The correct answer is option c. "requires the operation of natural selection".

Explanation:

Evolution is defined as the way organisms have developed and diversified in the past, and the continuous development of new traits in living beings. Evolution requires the operation of natural selection, since organisms development and diversification occurs by its adaptation to new living conditions. Natural selection operates by the premise of "survival of the fittest", and organisms that develop advantageous traits are likely to reproduce causing that the species evolves.