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. :(

2 answers

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