Answer
D.
Work Step by Step
Polyploidy occurs commonly in plants and less so in animals (D.). All of the other answer choices contradict this in some way (A., C.) or misstate when it occurs (B.).
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.