A teacher wants to know if students understand a homework assignment. Which of the following sampling methods would give the most unbiased sample?(1 point)

Responses

selecting assignments of the top students
selecting assignments of the top students

selecting assignments from a pile of collected homework at random
selecting assignments from a pile of collected homework at random

selecting the top five assignments from a pile of collected homework
selecting the top five assignments from a pile of collected homework

selecting assignments of stud

Selecting assignments from a pile of collected homework at random