mayonnaise is an example of\na a precipitate.\nb an emulsion.\nc a solute.\nd a gel.

Brief Explanations:

Mayonnaise is made by emulsifying oil with egg - yolk. An emulsion is a mixture of two or more immiscible liquids where one liquid is dispersed in the other. Mayonnaise fits this definition as it is a stable mixture of oil droplets dispersed in an aqueous phase containing egg - yolk components which act as emulsifiers. It is not a precipitate (a solid formed from a solution), a solute (a substance dissolved in a solvent), or a gel (a semi - solid colloidal network).

Answer:

B. an emulsion