The value of x is 0.24. Option C is correct. The frequency table is used to find the relative frequency.
<h3>What is a frequency table?</h3>
A frequency table is a collection of things with the number of times they appear in the table. f is used to signify frequency.
The given data from the table is;
The subgroup count of the column = 120
The total count = 500
x is the relative frequency
The relative frequency is found as;

Hence the value of x is 0.24. Option C is correct.
To learn more about the frequency table refer to the link;
brainly.com/question/12576014