[ahuja923]

Is it possible to get a walk through of the answer choices on this one? I don’t see how D is the answer, when Helena already concluded herself that extroversion is not biologically determined.

[dannypearlberg]

When Helena claims that extroversion is not biologically determined, I think this is most naturally interpreted as meaning that biology is not the only influence on whether or not one grows up to be extroverted, as her evidence for the claim is that non-biological factors seem to have an effect on whether or not one grows up to be extroverted. Jay, however, interprets Helena as claiming that biology plays no causal role with respect to whether or not one grows up to be extroverted- hence, the evidence he cites constitutes a counterexample to the claim that biology plays no causal role with respect to whether or not one grows up to be extroverted, but it isn’t a counterexample to what she really meant- that biology is not the only influence on whether or not one grows up to be extroverted.