Question:
Goal: To lower the PH of a solution, you can

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Add something acidic to the solution, like vinegar

Question:
Goal: How do I improve my mood naturally?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Getting exercise and eating healthy can help you improve your mood naturally.

Question:
Goal: How to tell if you have bad breath

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
First, lick your wrist, and then wait a couple of seconds, and then smell your wrist.