Final answer:
NaCl(aq) is a homogeneous mixture because the salt particles are uniformly distributed in the water solvent.
Step-by-step explanation:
A homogeneous mixture, or a solution, is a mixture in which the composition is uniform throughout the mixture. NaCl(aq) is a homogeneous mixture because the salt particles (NaCl) are uniformly distributed in the water (H₂O) solvent. The NaCl particles do not clump together or settle uniformly, and they do not form separate layers in the solution. Instead, they are evenly dispersed throughout the entire solution.