The correct answer is drunk,which is the past participle of "to drink"
"drank is the S.Past Ex.- I drank 2 beers yesterday
"drunk" is the past participle used in the Present/past Perfect tenses.
Answer: 3, "We are going depleting in the mountains this weekend'
Explanation: Depleting means "diminish in number or quantity'. It would make no sense to use that in this particular instance.