Which of the following would be a testable hypothesis?(1 point)

If acid is added to a solution, then the pH of the solution will go down.
If acid is added to a solution, then the pH of the solution will go down.

If certain foods are healthy for you, then they should also taste good.

Dropping a ball from a height of 10 m will cause it to bounce back up 5 m.

Plants produce glucose as the end product of photosynthesis.

If acid is added to a solution, then the pH of the solution will go down.

The testable hypothesis would be: "If acid is added to a solution, then the pH of the solution will go down."