Writing an essay with such a limited word count is not easy. Your professor or tutor probably is looking to see if you are able to understand the topic and write clearly and concisely. So what you want to focus on is answering the main question. That requires you to focus and consider only what is most important relevant to the question being asked. You would be wise to include information from the course or module as well, and that means incorporating the theories you were introduced to and the readings you were assigned.