At six different times on Canada Day in 2016, the number of people at the Pascal Zoo were counted. The graph to the right shows these results. During which of the following periods did the number of people at the zoo have the largest increase?

(A) 9:00 a.m. to 10:00 a.m.

(B) 10:00 a.m. to 11:00 a.m.

(C) 11:00 a.m. to 12:00 p.m.

(D) 12:00 p.m. to 1:00 p.m.

(E) 1:00 p.m. to 2:00 p.m.

![](https://cdn.mathpix.com/cropped/2024_04_20_6ed09463f225f8ba1f07g-038.jpg?height=477&width=526&top_left_y=2057&top_left_x=1190)
The time period in which the number of people at the zoo had the largest increase is the time period over which the height of the bars in the graph increases by the largest amount.

Looking at the graph, this is between 11:00 a.m. and 12:00 p.m.

(We note that the first three bars represent numbers between 200 and 400, and the last three bars represent numbers between 600 and 800 , so the time period between 11:00 a.m. and 12:00 p.m. is the only one in which the increase was larger than 200.)

ANSWER: (C)