Which one of these characterizes a hydrophilic substance, a substance that is easily mixed with water? Select one of the options below as your answer.

A. Substances that are polar in nature

B. Substances that are nonpolar in nature

C. Substances that are inert in nature

I believe the correct response is A. Substances that are polar in nature.

There is a principle in chemistry which is expressed as, "like dissolves like". This means that the substances only combines with substances of the same kind. Polar dissolves and combines well with polar and nonpolar dissolves and combines well with nonpolar. The hydrophilic substances should also be polar in nature. The answer is letter A.