Answer: The sentence can be completed as: "A homogeneous mixture that is also a solid solution"
Step-by-step explanation:
The question requires us to complete the sentence regarding the mixture of solid zinc and copper to obtain the metallic alloy brass.
Brass is an allow of zinc (Zn) and copper (Cu) and it can be considered a homogeneous mixture because it is not possible to distinguish the atoms of Zn and Cu throughout the mixture.
Brass can also be considered a solid solution if we think of it as solutes made of zinc and other metals "diluted" in a greater amount of copper. However, the proportion of zinc and copper in the mixture to obtain brass is an important factor to classify it as a solid solution.
Considering the options given to complete the sentence, we can say that:
A homogeneous mixture is resulted from the combination of zinc and copper to form brass, that is also a solid solution.