Answer: B. 6 to 11 cm.
Step-by-step explanation:
Given: Cory recorded the following values when he measured the length of leaves from one tree.
Length in centimeters: 8, 11, 9, 10, 10, 9, 6.
We know that the range of any data = the smallest data value to the largest data value
Here in the given data the largest value = 11 cm and the smallest value = 6 cm
Therefore, the range of the given data is = 6 cm to 11 cm.
Therefore, B is the right answer, the range of data is 6 cm to 11 cm.