Answer:
Extrapolation, because a key that is 12 keys from middle c is outside the data set.
Explanation:
Given
See attachment for the data set
Required
Which option answers the question
From the attached dataset, we can see that 12 is not within the range of the data set.
When one makes predictions about a datum or set of data outside the range of the original dataset, then one is extrapolating.
Hence, (d) is correct