We know it can be stressful to post questions and be eagerly awaiting an answer! We can assure you that our reviewers are answering Knowledge questions as quickly as possible. Udacity strives to answer questions on Knowledge in about 12 hours. However, when there is a high volume of questions being asked at the same time, it may take longer to receive your answer.
We appreciate your patience as you await a response. We completely understand your desire to have your question answered as quickly as possible. You will receive an email and a notification in Knowledge's Activity tab as soon as your question has been answered!