No. The sentence - You are still waiting for 'advice.' - is spelled with a 'c.' 'Advise,' pronounced (ad-vYz/rhymes with eyes) is a verb, meaning 'to counsel' or 'to suggest a plan of...
Correct answer typically implies there is one answer to the question. However, best answer can also be used if multiple answers COULD be correct, but one is better than the others.