Thirty-five maths majors, 33 music majors, and 45 history majors are randomly selected from 251 math majors, 518 music majors 332 history majors at the state university identify the type of sampling (simple random sample, cluster, stratified, convenience, systematic

The best answer would be stratified sampling.

It would not be random sample because it is talking about majors in at a state university. The purpose of a random sample to get random people from the whole population, not a specific set of people.

It would not be cluster because a cluster would be selecting a whole group and in this case, they are selecting people within groups

It would be stratified because stratified sampling is selecting randomly from all of the groups

It would not be convenience sampling because that is selecting random from 1 population

It would not be systematic sampling because that is not random.