The idea: the quiz is the "quick win" activity that students do within the first few lectures (it would be the 4th lecture). The quiz is titled "Warm Up Activity: Gauging Where You’re At Now". It's a way to allow students to find out where their knowledge on this topic currently stands, as a baseline. And as a way to engage them with a little activity early in the course. I would like to make it a free preview since seeing the 4 questions in this quiz would also be helpful for people deciding whether or not to buy the course (even if they cannot answer the questions/interact with the quiz). Since the 4 questions show a little preview of the content taught.