Respuesta :
The principal should ask the opinion of students selected by teachers.
What is a sample?
A sample is a group taken from a larger population which reperesents the holistic properties of the population. In this case, the principal needs a group of students to be selected as a sample.
Since the principal is not able to ask the opinion of every student, it follows that the principal should ask the opinion of students selected by teachers.
Learn more about sample: https://brainly.com/question/9496279