Hey Betsy!
I am not a Manhattan expert, but I got here first, so I thought I'd throw in my two sense in in the interim, in case its helpful : )
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On the modernity of Steele. If you look a lines 10-13, you will note this sentence structure:
"Most modern biologists are adamant that nothing of the sort occurs, ever. But the molecular immunologist Edward J. Steele is attempting to revive Lamarckism: he and his colleagues claim to have found evidence...." yadayada.
To me, this gives the strong implication (almost certain, in my opinion) that Steele is indeed part of the category introduced in the preceding sentence, and that his specific identifiers are subcategory to, or at least overlap categorically with, the previously raised 'biologist' designation.
On the test, this was enough for me. So, I think the short answer to your question is:
yes this is a leap that it is reasonable to make.
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However, I did a little digging, and I found an even clearer justification in the last paragraph for you!
(I have to '....' my way through to demonstrate clearly and concisely which identifiers are referring to which persons, so please feel free to go check it out yourself and double check my work. That said, I don't think I am making any editorial leaps by cutting out 3 straight lines of irrelevancy to our discussion
)
Within Lines 48-56:
"Steele and his colleagues claim to have found such evidence....
Other Biologists are not so easily swayed."
I can't say I would have looked this closely for airtight language on the real test, but for what its worth, it is in there at the end.
I hope I helped out!
P.S: In (E): Yes, "a case study in the philosophy of science" has no real relation to the article at all. I think not only is "philosophy of science" wildly out of range, so is "case study"!