D. It descibes how caterpillers become butterflys. Sorry this is late.
Explanation:
I took the test! Trust me, it's D. It describes how caterpillars become butterflies. One day, the caterpillar stops eating, hangs upside down from a twig or leaf and spins itself a silky cocoon or molts into a shiny chrysalis. Within its protective casing, the caterpillar radically transforms its body, eventually emerging as a butterfly or moth. Hope this helps you!
What are the choices? If I had to choose a phrase without knowing of any choices, I would put "Bad studying" But im pretty sure thats not the answer you are looking for.