Hello!! I think your best answer would be D - Tetrad because consists of four chromatids. It is made up of two (pair) of homologous chromosomes that have already replicated into a pair of sister chromatids. I hope this answers your question. Have a great day!! :)
Answer: B. Comparative embryology
Explanation: Good luck! :D
It is twisted to create a greater surface area for digesting and to increase the nutrient absorption.
