Answer: The correct answer is -
C) heterogenous mixture.
Heterogenous mixture can be described as a mixture that is non-uniform in its composition.
In other words, its constituent parts are present in different phase and unevenly/non uniformly distributed. By using different means of separation, the constituent parts of the mixture can be easily separated from one another.
In the given question, mixture that is investigated, contains particles, which are of different sizes, shapes, and colors. They are also unevenly distributed in the substance.
Thus, it represents heterogeneous mixture.
