Which Response by the Patient Demonstrates an Internal Locus of Control

Which response by the patient demonstrates an internal locus of control?

A) "My blood sugar wouldn't be out of control if my wife prepared better foods."
B) "I knew I shouldn't have come to this hospital; I'd be better if I hadn't."
C) "God must be getting even with me for my past behavior."
D) "I'm just glad to be alive; the accident could've been a lot worse."