Answer:
C - variables
Explanation:
The variables in statistical studies are the values that assume certain characteristics within a survey and can be classified as qualitative or quantitative.
Qualitative variables cannot be expressed numerically, as they relate to situations such as skin color, eye color, soft drink brand, car brand, musical preference, among others. In the case of quantitative variables, we use numerical representation. They can be classified as discrete and continuous.
Regardless of the case, we can see that the factors age with which people marry for the first time, types of weddings, cost of wedding gifts and average duration of weddings are variable, since they are values that will assume characteristics within Chayton's research .
