Asurvey was carried out among students in middle school to decide whether to buy a new set of instruments for the marching band or build a second scoreboard for a football field. which survey method would best represent the views of the entire school.

a- ask all the students who attended to the last football game

b- ask the first 5 students who walk in the hallway that morning

c- ask 40 random students that signed up for music this year

d - ask 50 people whose names was randomly chosen of the roster