WHICH WORD IN THE READING MEANS “A HARD SUBSTANCE THAT IS RED, PINK OR WHITE IN COLOR, ANDTHAT FORMS ON THE BOTTOM OF THE SEA FROM THE BONES OF VERY SMALL CREATURES”

8/ Which word in the reading means “a hard substance that is red, pink or white in color, and

that forms on the bottom of the sea from the bones of very small creatures”?

A. coral B. barnacle C. bacteria D. energy