Define solution.
STATEMENT 1: A solution is a homogenous mixture of two or more substances.
STATEMENT 2: We can have solid solutions as alloys.
STATEMENT 3: A solution has homogeneity at the particle level.
STATEMENT 4: Lemonade is an example of a solution.
All are correct.
Solutions are groups of molecules that are mixed and evenly distributed in a system. Solutions are homogenous systems. Everything in a solution is evenly spread out and thoroughly mixed. Therefore all the statements are correct.