Why is A incorrect?

@hannahnaylor5, The flaw in the stimulus is a correlation/ causation flaw. A is correlated with B, hence A must cause B. Absence of admin staff is correlated with longevity, hence abolishing admin staff will ensure longevity. (A) has no correlation causation component, it is not trying to say that no jet engine is correlated with the airplane's ability to fly, hence having no jet engine would guarantee that an airplane can fly.