Final answer:
Acceptance is the element of motivational interviewing that honors clients' absolute worth and recognizes their autonomy.
Step-by-step explanation:
The element of motivational interviewing that is best described as honoring clients' absolute worth and recognizing their autonomy is Acceptance. According to Carl Rogers, who developed the client-centered therapy approach, therapists need to display unconditional positive regard for their clients, accepting them for who they are without judgment. This acceptance reinforces the clients' sense of autonomy and helps them feel valued and respected in the therapeutic relationship.