Answer
A.
Work Step by Step
B. - D. can all be found in fungi, plants, and some protists, and A. is a stage of development unique to animals with their digestive tracts.
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.