[Q]: Which of the following solutions is better for the following goal:
How do I keep track of my menstruation?

OPTIONS:
- Keep a small spoon and a red pen in your nightstand, when your period starts, mark the spoon with a red x on the days you menstruate, that way you can tell how long it is from one period to another.
- Keep a small calendar and a red pen in your nightstand, when your period starts, mark the calendar with a red x on the days you menstruate, that way you can tell how long it is from one period to another.

[A]: Keep a small calendar and a red pen in your nightstand, when your period starts, mark the calendar with a red x on the days you menstruate, that way you can tell how long it is from one period to another.

[Q]: Which of the following solutions is better for the following goal:
Cool down a dog.

OPTIONS:
- Use damp hot cloth on dog's armpit and groin areas.
- Use damp cold cloth on dog's armpit and groin areas.

[A]: Use damp cold cloth on dog's armpit and groin areas.

[Q]: Which of the following solutions is better for the following goal:
To get a rebound in a basketball game,

OPTIONS:
- jump up and grab the basketball after a shot is missed.
- jump up and grab the basketball after a shot is made.

[A]: jump up and grab the basketball after a shot is missed.

[Q]: Which of the following solutions is better for the following goal:
Soak white mugs.

OPTIONS:
- Soak mugs in container with warm soda and 2 tbsp of hydrogen peroxide for 10 minutes.
- Soak mugs in container with warm water and 2 tbsp of hydrogen peroxide for 10 minutes.

[A]:
Soak mugs in container with warm water and 2 tbsp of hydrogen peroxide for 10 minutes.