Brown University Supplement

<p>I have a question about the Brown Supplement, specifically the Academic Essays For Applicants To Specific Programs part.
The directions say "Upload or attach your response to the following questions separately. Include your full name, school, and birth date at the top of each page, and be sure to indicate the number corresponding to each question." Limit your total response to 500 words.
I have to answer this because my intended major is Chemistry. There are 4 questions, does this mean that I have to answer all 4 or pick 1? Also, does this mean that my response should be 500 words per question or all together?</p>