A school principal wants to find out what the students think about the teaching quality in the school. Which of these samples is unbiased?

i think this is the answer

Step-by-step explanation:

A: survey every fifth student who rides in a car to school

B: survey 3 randomly selected students from every homeroom

C: survey every tenth seventh grade student during lunch

D: survey 5 randomly selected students from every art, drama, and music class

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.