Final answer:
The term for the choice not to engage in sexual behaviors is celibacy, which is typically a personal or religious decision. It is different from promiscuity, which involves having multiple sexual partners.
Step-by-step explanation:
The term used for the choice not to engage in sexual behaviors is celibacy. Celibacy can be a conscious decision for various reasons, including personal, religious, or health motivations. It is distinct from the other terms listed whereby wenching and lechery are outdated terms historically used to describe promiscuous behavior, while promiscuity refers to having multiple sexual partners without necessarily forming emotional attachments.