Question: Which is true?
Choices:
text: hydrogen is composed of water and oxygen
label: A
text: waiters are composed of hydrogen and oxygen
label: B
text: most of our oceans, lakes, and pond are composed of hydrogen and oxygen
label: C
text: water is composed of hydrojets and oxyclean
label: D
Answer: C
Fact: the composition of something can be used to identify that something