Final answer:
The NBCOT (National Board for Certification in Occupational Therapy) is the not-for-profit credentialing agency that assures the public of the entry-level competence of occupational therapy practitioners.
Step-by-step explanation:
The not-for-profit credentialing agency that assures the public that occupational therapy practitioners have entry-level competence is the NBCOT (National Board for Certification in Occupational Therapy).