Great LSAT thinking, lorraineogan

Here’s the argument core for this problem:
Doctors could administer placebos "just to give the patient satisfaction that something was being done"
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Administering placebos is ethically questionable
This argument assumes a lot about ethics. It implies that the doctor’s underlying reason for prescribing the placebo impacts the ethical-ness of that decision, but who cares WHY the doctor prescribes the placebo if the placebo benefits patients?
(An analogy: I bought my friend a birthday present just because she would’ve been offended if I didn’t buy her one. I didn’t actually care about her birthday or think she needed the gift. Is my purchase unethical? My motives aren’t pure, but is the action totally tainted?)
(A) contradicts the premise. The author thinks doctors might consider patient satisfaction when administering treatment.
(B) is correct. The argument assumes that the doctor’s reason for administering the placebo matters. This is what we’re looking for.
(C) is way too extreme and out of scope. First of all, the author believes placebos are ethically questionable, but never goes so far as to say they are indefensible. Also, the argument is about doctors administering placebos as a component of treatment, while this answer choice is about treatment plans that rely SOLELY on placebos.
(D) undermines rather than helps the argument.
(E) is out of scope. We’re talking about doctors here.