A loose connection between theory and method threatens _________ validity

Nicolás wants to see a therapist to address ongoing conflicts with his sister. What would a psychoanalyst likely ask him in the first session?

A. Do you wish you had a better relationship with your sister? B. What do you usually do when you're mad at your sister? C. What if you talk to your sister and things work out better than you expect? D. What is your relationship with your sister like?

Graph these discrete-time exponential and trigonometric functions.