Leon Kass argues that the primary responsibility of physicians is to: (Points : 1)

respect the autonomy of the patient.
make decisions on the basis of compassion and good intention.
benefit sick by the activity of healing.
preserve a patient’s life by every means possible.

benefit sick by the activity of healing.

Correct, unless the "healing" is by methods he opposes, like stem cell use (and research), or artificial ways to keep a person live while the healing is going on (such as external hearts or lung machines). Honestly, it is hard to get a read on him, he mixes "naturalistic" and "humanistic" and "biblical" philosophy, and he changes his tune over time. George W. Bush liked his songs, and formed a so called "stem cell committee" in <honor> of him.

I haven't read Leon Kass, but most doctors would choose to benefit the sick by healing.

To determine Leon Kass's argument on the primary responsibility of physicians, we can analyze each of the provided options:

1. Respect the autonomy of the patient: This option suggests that physicians' primary responsibility is to uphold the patient's autonomy, meaning they prioritize the patient's rights to make their own decisions about their healthcare. However, this may not align with Kass's argument.

2. Make decisions on the basis of compassion and good intention: This option implies that physicians' main role is to make decisions based on empathy and good intentions. While this is an important aspect of medical practice, it may not encompass Kass's entire argument.

3. Benefit the sick by the activity of healing: This option suggests that the primary responsibility of physicians is to provide healing and benefit to the sick. This aligns with Kass's argument, as he emphasizes the duty of physicians to actively engage in healing and improve the patient's well-being.

4. Preserve a patient's life by every means possible: This option implies that physicians should prioritize preserving a patient's life using all available methods. While this is an essential aspect of medical care, it may not capture Kass's complete argument.

Given the above analysis, the option that aligns with Leon Kass's argument is: "Benefit sick by the activity of healing."