answer the questions

The principal at your school has received 100 gift cards from local restaurants and theme parks to give away to the student body. They enlist the AP statistics students to come up with several ways he could randomly select students from the student body to receive these gift cards. There is 3200 students at this High School consisting of 820 seniors, 756 juniors, 886 sophomores, and 738 freshman. 1. Describe, in detail, how your principal could take an SRS of the student body. 2. The principal would like to give the gift cards out equally amongst the different grade levels. What random sampling technique would be best for this situation? Describe, in detail, how to accomplish this sampling technique