Goal and options: How can I make purple frosting?

OPTIONS:
- Use equal parts red and blue food coloring on white frosting.
- Use equal parts red and blue food coloring on chocolate frosting.
output answer: Use equal parts red and blue food coloring on white frosting.
[Q]: Which of the following solutions is better for the following goal:
How to ensure you don't use your guitar pick?

OPTIONS:
- Place the pick at the top of the guitar underneath the strings
- Place the pick at the bottom of the guitar atop the strings

[A]: Place the pick at the top of the guitar underneath the strings
input question: crayon

OPTIONS:
- writes on napkins
- writes on brush

output answer: writes on napkins
[Q]: Objective: buy new car OPTIONS:
- pick the best for you
- research needs and price cars
[A]: research needs and price cars
Q: Here is a goal: Soften butter fast.

How would you accomplish this goal?

OPTIONS:
- Put stick of butter in paper bag, then smash with rolling pin.
- Put stick of butter in ziploc bag, then smash with rolling pin.

A: Put stick of butter in ziploc bag, then smash with rolling pin.
Question:
Goal: To put pillowcases on pillows easily.

Which of the following methods is more reasonable for accomplishing this goal?

OPTIONS:
- Flip the pillowcase inside out and put your arms inside. Then grab the corners of one end of the pillow and pull it towards you, while sliding the pillowcase away from it.
- Flip the pillowcase inside out and put your arms inside. Then grab the corners of one end of the pillow and pull it towards you, while sliding the pillowcase down onto it.
Answer:
Flip the pillowcase inside out and put your arms inside. Then grab the corners of one end of the pillow and pull it towards you, while sliding the pillowcase down onto it.