Answer :
Bivariate regression can not demonstrate when the two variables are causally related.
The term variables in math means an alphabet or term that represents an unknown number or unknown value or unknown quantity.
Here we have to find the term that must not demonstrate the bivariate in math.
In order to find the resulting term, we must know the definition of bivariate regression.
The term bivariate regression in statistics is defined as the simple linear regression model which is used to predict one variable referred to as the outcome, criterion, or dependent variable from one other variable referred to as the predictor or independent variable.
Based on these definition we have identified that if the two variables are related then the regression process is not possible.
Therefore, option (d) is correct.
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