The correct answer is C. foam. Foam is a colloid where a gas is dispersed in a liquid or solid.Liquid foams (like whipped cream or soap suds) consist of gas bubbles trapped within a liquid.Solid foams (like styrofoam or pumice) consist of gas bubbles trapped within a solid.
Answer:The answer is C. foam. Here's why: - Colloids are mixtures where tiny particles are dispersed evenly throughout another substance.- Foams are a type of colloid where gas bubbles are dispersed in a liquid (like whipped cream) or a solid (like styrofoam). Let's look at the other options: - Aerosol: A colloid where liquid or solid particles are dispersed in a gas (like fog or smoke).- Emulsion: A colloid where one liquid is dispersed in another liquid (like milk or mayonnaise).- Solid: A state of matter, not a type of colloid.