Answer: Salt and Water
Explanation:
A solution is defined as:
a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
In the oil/water, the oil and water do not mix, but instead the oil goes below the water. In the salt/water mixture, the salt (solute) has dissolved and mixed evenly in the water (solvent).
Note: Water is known as the Universal Solvent since it can dissolve many particles.
