Answer:
Histogram
Explanation:
The number of students treated per month has been recorded for the last 60 months.
This type of graph with large data set works well in histogram.
Dot plot is well used for small data set and box plot is a graphical way to summarize the important aspects.
Histogram provides a visual interpretation of numerical data where bars of different heights are used to show continuous data.
Therefore, Histogram would allow us to quickly see how many months between 100 and 200 students were treated.