Do you like the story the giver?

Which of these can an adverbial clause modify?

Which sentence uses the simple present tense of sleep? mr. ford sleeping on a feather mattress in his apartment. mr. ford will sleep on a feather mattress in his apartment. mr. ford sleeps on a feather mattress in his apartment. mr. ford slept on a feather mattress in his apartment.

What is the definition of cache and in what circumstances would it be appropriate to use it