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Prakruti_Patil
regarding D -- it states the correlation is incorrect, however Eleanor is pointing out difference in zoos 40 years ago and now, isn't that comparison rather than correlation?
Good doubt.

(D) does not require denying that a correlation exists. It refers to rejecting the force of a correlation by pointing out problems in how it is used.

Eleanor accepts that zoos had shorter life spans. But she argues the comparison is distorted because the reserves are unusually safe and the data are outdated. That means the observed relationship may not reflect the relevant current conditions.

So she is challenging the validity of the correlation as evidence, not denying that a comparison was made. That fits (D).
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Hello,

D says "Rejecting a problematic correlation and a potential variance shift...".
By variance shift i understand that it is talking about the shift that may have happenned in the last 40 years. But Argument does not reject the variance shift. It says variance shift may have happened. But choice D says it rejects the variance shift.
So I rejected D.

Could someone explain?

Regards,
Ankit
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