Answer:
Option (a) is correct.
To represent how many months between 75 and 100 students were treated the best graph is histogram as it is plotted on intervals 75 -100
Explanation:
We have to choose the type of graph would allow us to quickly see how many months between 75 and 100 students were treated.
Histogram is a type of graph that uses bars of different height and is usually used to show continuous data. Difference between the intervals is called class marks.
Dot Plot is a type of graph used to represent specifically small data using dots. It shows values at random points.
Box plot is a type of graph used to find the maximum , minimum and Quartile of the data.
Thus, to represent how many months between 75 and 100 students were treated the best graph is histogram as it is plotted on intervals 75 -100