Independent Premise Verification:Step 1: Analyze Harris’s core position. Harris states that the red wolf is a hybrid, argues that the red wolf "clearly deserves protection," and concludes that endangered-species regulations should be changed to protect hybrids.
Step 2: Analyze Vogel’s core position. Vogel responds by arguing that "hybrids do not need protection" because they can always be recreated from their parent species if they die out.
Step 3: Evaluate the point of disagreement. Harris believes hybrids do deserve and need protection (using the red wolf as the primary example), while Vogel believes hybrids do not need protection under any circumstances. Therefore, they disagree on whether hybrids ought to be protected by these regulations.
Step 4: Match this to the choices. Option (D) explicitly captures this disagreement over whether certain hybrids should be protected by endangered-species regulations.
The correct option is (D).
Detailed Breakdown of the ArgumentTo find a "point at issue" (what two speakers are arguing about), you need to find the statement where one person says "Yes" and the other says "No."
Harris's Stance: Harris looks at the red wolf (a hybrid), decides it deserves protection, and demands that international regulations be changed so that
hybrids can be protected. This means Harris answers "Yes" to the question of whether hybrids ought to be protected.
Vogel's Stance: Vogel explicitly counters with, "
Yet hybrids do not need protection." Vogel believes that because hybrids can theoretically be recreated by re-crossing their parent species, they don't warrant conservation status. This means Vogel answers "
No" to whether hybrids ought to be protected.
Why the Other Options Fail(A) is incorrect because Vogel never disputes Harris's genetic claim. Vogel says "Yet hybrids do not need protection," implicitly accepting or bypassing the premise that the red wolf is a hybrid, focusing instead on the policy rule about hybrids.
(B) is incorrect because neither speaker discusses animals currently considered endangered that are actually safe. They are debating
hybrids specifically, not non-hybrid species.
(C) is incorrect because neither speaker argues about whether the red wolf population is imminently dying out; they argue about the
rule of whether hybrids deserve protection in the first place.
(E) is incorrect because both speakers treat the genetic research findings as a given; Vogel focuses entirely on the policy outcome (whether protection is necessary), not the validity of the genetic techniques.