Here's a problem to solve: A teacher mixes a small amount of salt in a glass of warm water and asks the students to observe physical changes that occur as the salt dissolves. Which physical change will they most likely observe?

Among the 4 following options, which is the correct answer?

- A: The solution will become clear.
 
- B: The salt will form bubbles.
 
- C: The solution will increase in temperature.
 
- D: The water will evaporate.
 