Final answer:
A mixture where one substance is evenly distributed within another and indistinguishable is called a solution, which is a type of homogeneous mixture. The correct answe is C) Solution.
Step-by-step explanation:
A mixture with one substance spread out so evenly in another substance that you cannot tell the two substances apart is known as a solution. A solution is an example of a homogeneous mixture because it has a uniform composition throughout, and the different parts cannot be seen or differentiated by the nak_ed eye or under a microscope. Consider the example of salt dissolved in water: the salt disperses evenly throughout the water, creating a mixture that appears as a single substance - a solution.