It is given that,
A study found that the most popular band from the 1960s was the Beatles
It is obvious that, there was so many bands from 1960s. And the Beatles was the most popular band from the 1960s.
So, This data " the most popular band "represents the number of people who like this band most.
Definition for the mode is, it is the value that appears most frequently in a data set.
Hence, Mode - the statistical measurements most likely led to this conclusion.
Therefore, the correct option is option B.