Answer: B) homogeneous mixture
Explanation:-
Homogeneous mixture are those mixtures in which dispersed phase is uniformly distributed throughout the dispersion medium. Thus there is no physical distinction between the dispersed phase and dispersion medium. Example: Sugar dissolved in water
Heterogeneous mixture are those mixtures in which dispersed phase is not uniformly distributed throughout the dispersion medium. Thus there is a physical distinction between the dispersed phase and dispersion medium. Example: sand dissolved in water.
In the given diagram, there is a uniform distribution of the dispersed phase and the dispersion medium and thus it is an example of homogeneous mixture.