Which of the Following Structures Would Represent the Repeating Unit

question 34

Multiple Choice

Which of the following structures would represent the repeating unit of an alternating styrene-acrylonitrile copolymer?

---

Definitions:

Sponges

Simple aquatic animals belonging to the phylum Porifera, characterized by their porous bodies that filter nutrients from water.

Geological Eon

A major division of geological time, lasting billions of years, that divides Earth's history into significant phases.

Archean

A geological eon extending from about 4.0 to 2.5 billion years ago, characterized by the formation of the Earth's first stable continental crust.

Hadean

The earliest eon in Earth's history, marked by extreme heat and uninhabitable conditions, spanning from about 4.6 to 4 billion years ago.