Afrequency distribution is a. a graphical device for presenting categorical data. b. a graphical form of representing data. c. a tabular summary of a set of data showing the frequency of items in each of several nonoverlapping classes. d. a tabular summary of a set of data showing the relative frequency.

Option d

Explanation:

Frequency distribution can be defined as a review of every particular value in some factor and the occasions they happen. That is, a frequency distribution  determines the ways frequencies are appropriated over data. Frequency distribution are generally utilized for outlining categorical values or variables.

Thus it is tabular summation or summary of a data set that gives the relative frequency.