Answer:
a)

b) 3 quadrants/sections
Explanation:
we are given 3 silver bikes and 1 green bike for a total of 4 bikes. so, the number of green bikes as a fraction of total bikes is
.
next, we can represent the data as a pie chart. a pie chart is a circle. it has 4 quadrants/sections. if we want to shade
of the pie chart, we will take 3 of 4 quadrants.