Question:
Goal: How to paint the box for a solar air heater?

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

OPTIONS:
- Paint the box either black or any dark shade so that the heat is absorbed and trapped within the box for efficient heating.
- Paint the box in silver color on both the exterior and interior so that their is a feedback cycle of heating happening within the box.
Answer:
Paint the box either black or any dark shade so that the heat is absorbed and trapped within the box for efficient heating.

Question:
Goal: How do you clean wood floors?

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

OPTIONS:
- The best solution for cleaning wood floors is one cup of vinegar mixed with one gallon of water. Immerse a clean mop into the solution and wring it until it is damp-dry.
- the best solution for cleaning wood floors is one liter of vinegar mixed with one gallon of water. Immerse a clean mop into the solution and wring it until it is damp-dry.
Answer:
The best solution for cleaning wood floors is one cup of vinegar mixed with one gallon of water. Immerse a clean mop into the solution and wring it until it is damp-dry.

Question:
Goal: How do I shuffle through songs?

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

OPTIONS:
- go to a playlist and click "shuffle" at the top
- go to settings menu and click "shuffle" at the top
Answer:
go to a playlist and click "shuffle" at the top