[Q]: Which of the following solutions is better for the following goal:
How can you make yourself more alert and stop feeling sleepy?

[A]: Hold your breath as long as possible, then exhale slowly.

[Q]: Which of the following solutions is better for the following goal:
Prevent spread of cold sore on bed.

[A]: Change pillowcase and wash previous one with hot water.

[Q]: Which of the following solutions is better for the following goal:
To play Superman 64.

[A]: There is no game called "Superman 64". There is a game called "Superman" on Nintendo 64, which is what is likely meant.

[Q]: Which of the following solutions is better for the following goal:
To prevent over shopping at the grocery store,

[A]:
have a small snack before shopping so that you don't feel hungry.