Based on the information provided within the question it can be said that this is emphasized in the implementation intentions. This term refers to a self-regulatory strategy which places the when, where, and how on different situation towards goal-directed behavior. Such as is being described in the question above.
Factors associated with contraceptive choice or effectiveness of use include women's personal characteristics and childbearing goals. These factors can change throughout a persons life. Something that would cause one to change the birth control they use is definitely cost and availability and all of the above.
I would say D. Blaming others, because the other responses Are important characteristics of good mental and emotional health and D is the only one that isn't.