Question

Which of these statements is true?

Answer 1

B). Some elements found in nature exist as molecules. 
That is, their atoms travel around in bound pairs. 
Examples are Hydrogen, Oxygen, and Nitrogen.

A). No.  Without atoms, you can't make a molecule.

C). No.  A compound is a chemical combination of two or more elements.

D). No.  An atom is the smallest unit of ONE single element.

Answer 2

Hello, your answer is, C. Some compounds include only one type of element.

I hope it helped!