Final answer:
Logistic regression is the statistical method employed in a logistic regression model to predict 'y=coupon usage' from 'x_1' and 'x_2'.
Step-by-step explanation:
In a logistic regression model to predict y=coupon usage from x1 and x2, the statistical method employed is c) Logistic Regression. Logistic regression is used when the dependent variable (y) is categorical or binary, and it models the relationship between the independent variables (x1 and x2) and the probability of the binary outcome.