Pls help with this! Write the difference of bullying and “CYBER” bullying and write the similarities in the middle, or u can just tell me what to write but it’d be easier if u edited it, at this point I just need this completed by today, tysm and have a great day luv! <3

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling