From the graph
Highest age of the musicians = 12
Loweat age = 4
Range = 12 - 4 = 8
Total number of people = 2 + 3 + 4 + 5 + 6 + 5 + 4 + 3 + 2 = 34
Age 4 = 2 people
Age 5 = 3
Age 6 = 4
Age 7 = 5
Age 8 = 6
Age 9 = 5
Age 10 = 4
Age 11 = 3
Age 12 = 2
Fewer of the musician play at the age of 12 than at the age of 5
Option D is not true. Number of musicians started to play at the age of 9 decrease downward.