the right answer is
(b.) Vm
i've had the same problem. i generally just ignore it, as a ton of these "verified answers" are completely wrong.
a) click on any cells in the range of data
b) click the data
c) click sort& filter group, click sort
d) select the column to sort by and then select a sort order
e) select the next column to sort by and select the sort order
f) click ok