Answer: Option (b) is the correct answer.
Step-by-step explanation:
A mixture that contains two or more different substances which are mixed together in different composition is known as a heterogeneous mixture.
For example, a jar mixed of nuts is a heterogeneous mixture.
A mixture in which solute particles are evenly distributed throughout the solvent is known as a homogeneous mixture. It forms a clear solution.
For example, a glass of tap water is a homogeneous mixture.
A mixture in which microscopically insoluble particles are dispersed in a solvent then it is known as a colloid.
For example, milk is a colloid.
Therefore, we can conclude that out of the given options a jar mixed of nuts is a heterogeneous mixture.