Final answer:
Mixtures can be homogeneous and are also known as solutions, according to the question describing such mixtures with uniform composition throughout.
Step-by-step explanation:
Mixtures can be classified based on uniformity and particle size into different types, such as homogeneous mixtures and heterogeneous mixtures. Homogeneous mixtures have the same composition throughout and are also known as solutions. In contrast, heterogeneous mixtures have a non-uniform composition. Suspensions and colloids are examples of heterogeneous mixtures with varying particle sizes. Suspensions have larger particles that can settle over time, while colloids have intermediate-sized particles that remain dispersed.
Given the description provided, the correct answer to the student's question 'Mixtures can be _____ a.k.a ______ and are known as solutions.' is option (c) homogeneous; solutions.