Question

temperature (°c)
8am 10am 12pm 2pm 4pm
between what times did the temperature increase the most?
8am to 9am 11am to 12pm
10am to 11am 2pm to 3pm

Explanation:

The graph shows the steepest upward slope (largest temperature increase) between 10am and 11am compared to the other options. The temperature rises more sharply in this interval than in 8am-9am, 11am-12pm, or 2pm-3pm (which shows a decrease).

Answer:

10am to 11am