Answer:
Selection effect
Explanation:
The selection effect or the selection biased is the procedure of distortion in the statistical analysis. collecting in the data from the sample population. It is a threat from out of the four for validity. It shows the result of the test variables. It is a type of conversion rate. It is like collecting the data from the unrepresentative population.
Thus here the higher diverse report of the divorce of the couples. This is the explanation of the selection bias.