- Wed Jul 21, 2021 7:05 pm
I actually don't think answer choice C supports the conclusion at all. Let's examine closely what it states. "Kin recognition helps tiger salamanders avoid inbreeding that may be life-threatening to their offspring."
So, this is a little tricky, as there is the word "that," the pronoun, which, here, is referring to the inbreeding and not kin recognition, the subject of the sentence. This inbreeding is the "that" (and not, as you might have surmised, the kin recognition) which is life-threatening to the offspring. In other words, the kin recognition helps tiger salamanders from making sweet romance with their cousins, which as pleasant (and innocuous, relatively speaking) as it may be for them (the parent tiger salamanders), probably doesn't produce offspring that will win best in show (or best in swim!) at any tiger salamander contest anytime soon (I love those shows).
So the point is, answer choice C posits a situation in which the kin recognition helps only the offspring, which is the exact opposite of what is stated in the last lines of the passage: "...simply as a means by which an organism preserves its own life, not as a means to aid in relatives’ survival." This is why it most certainly does weaken the conclusion found in said last lines.
Let me know if you have further questions.