Range is the set of output values of the function.
In the given question : The temperature for five hours in Queens, New York is shown
So, the tempreature is the output of the graph and time is the set of input values :
From the graph the tempreature for five hours
Intital at 0 hours the tempreature is 56 and at five hours temperature is 70
Since x axis represent the time and y axis represent the temperature
So. Range will be : 56 ≤ y ≤ 70
Answer : 4) 56 ≤ y ≤ 70