Ethicist: As a function of one’s job and societal role, one has various duties.
Principle
don't have overwhelming evidence that fulfilling a → you should duty will have disastrous fulfill that duty consequences
Evaluate / Goal
There was a lot of other stuff in that paragraph, but only the last idea was labeled a "principle", and the question stem is only asking us to conform to the principle, so we probably only need to focus on that rule.
This rule only allows us to conclude that one should fulfill a duty. If any of these answer choices have conclusions that are saying someone "shouldn't fulfill the duty", they're automatically wrong.
If the conclusion is saying someone "should fulfill the duty", then we just want to pick the answer that most clearly establishes that there isn't overwhelming evidence of disastrous consequences.