There are some constrats confusing the scientists thats why they are unsure on the exact type of fish. Read the facts above:
1. Because of the habitat where it was found and its obviously eel-like body, almost all scientists believe that the fish is an eel.
2. [Counter premise] But the cartilaginous skeleton puzzles them, since no known eel possesses one.
3. So scientists are still unsure as to the fish's precise classification, but they agreed immediately that the most logical classification would be as either a shark or an eel
The ending of conclusion rules out E.
E. A fish cannot be both a shark and an eel.
Now, Kudos please.
I doubt whether the stimulus confirms the fish as eel or shark, for certainity.
But, except D none is suitable as per the context. There is no mention/indication on:
1. Fighting among fish
2. Fish survival3. Most/all fish are dead
So, only D survives.
made incorrect test:
Answer D may fall apart by the following explanation, I provided:
D. The waters off Papua New Guinea are generally hospitable to eels.
I did not take this option seriously, because the fact that eel live in specific area, which we imply from the text does not necessarily mean the area is hospitable to them. it is very much possible that simply because of their tough fighting against nature's inconveniences eel are managing to live in New Guinea. EEl could survive that area, even the waters are not hospitable to them. U can not conclude that from the stem given.
I agree to your explnation and to the OA 'D'.
But can you please give more explanation how can we eliminate E.
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