Why Does a Researcher Decide to Use Logistic Regression Instead

Why does a researcher decide to use logistic regression instead of linear regression to calculate survival odds after suffering an out-of-hospital heart attack, in persons of various ages, genders, and cardiac diagnoses?

A) Survival versus nonsurvival is a dichotomous variable.
B) Having a heart attack is a variable that has many possible outcomes.
C) Linear regression is less logical than is logistic regression.
D) Age is a ratio-level variable.
E) Gender is a nominal-level variable.
F) Cardiac diagnosis is a nominal-level variable.