The correct answer is C. A type of homogeneous mixture where one substance dissolved in another
Step-by-step explanation:
To begin with, a solution is always a homogeneous mixture; this means the final result is a uniform substance, and its components cannot be easily separated. Additionally, a solution is obtained by dissolving one substance in another. For example when you dissolve a teaspoon of sugar into a glass of water. Besides this, in a solution, the substance dissolved (e.g. the sugar) is known as the solute while the liquid is known as the solvent as this dissolves the first substance. Thus, the best definition of a solution is "A type of homogeneous mixture where one substance dissolved in another".