How would you classify sugar?
a) pure substance-compound.
b) mixture-heterogeneous.
c) pure substance-element.
d) mixture-homogeneous.
e) none of the above.

The answer to your question is a) pure substance- compound

Explanation:

a) pure substance-compound.  A pure substance can be an element or compound that is not mixed with another substance, glucose is a compound and also a pure substance.

b) mixture-heterogeneous.  This option is wrong because glucose is not mixed with another substance.

c) pure substance-element.  Glucose is a pure substance but it is a compound because it is composed of carbon, hydrogen, and oxygen. This option is incorrect.

d) mixture-homogeneous.  Glucose is not a mixture, it is a pure substance. This option is wrong.

e) none of the above. This option is wrong because the first option is correct.

A. Pure substance - compound

Explanation: Sugars or sacharrides are complex compounds having Carbon,Hydrogen and Oxygen atoms on its composition. Since a combination of two or more different elements forms a compound and compounds are pure substances.