Das Geschäft (is able to) _____ die Türen nicht aufmachen.

darf

wollen

kann

kannst

i know this is kann or kannst, but i don't know which. :(

Das Geschäft is 3rd person -- kann

kannst is 2nd person: du kannst
That "st" on verbs is a reliable indicator of 2nd person singular.

darf is also correct but i think kann

To determine the correct answer, we need to look at the context of the sentence. Based on the structure of the sentence, it seems like it is referring to a specific business or store. In this case, "Das Geschäft" is a singular noun, so we need to use the third-person singular form of the verb "können" (to be able to), which is "kann." Therefore, the correct answer is "kann."