Essayist: The way science is conducted and regulated can be changed.
Conclusion (But we need to)
In considering changes to how science is conducted and regulated, we need to determine whether the changes are warranted, given their cost.
Evidence
We could change how we conduct animal research (putting to a halt the testing of animals), but that would cost us opportunities to research certain things or would make researching other things very expensive.
We could change how we regulate DNA usage, by curtailing it drastically.
We could restrict other things too, and even create a system of fraud police, but all this would be costly and would change the character of science.
Evaluate
Like most conclusions on Main Conclusion, LSAC is going out of its way to hide it and make it weird. Whenever we do a Main Conclusion, we specifically prime our brain before reading the paragraph to listen / look out for the two main patterns:
- conclusion is in the First Sentence - conclusion sounds like a Rebuttal
By doing that here, it's possibly easier to hear the author's Opinion shining through in that second sentence (and it starts with a Pivot word like But, which would also prime us to wonder, "Is this the Conclusion?").
Once we hear an opinion, if the author seems to be trying to support that opinion then it's probably going to turn out that the first opinion really was the main conclusion.
Our author's 2nd sentence is saying, , and then the author proceeds to give us 4 sentences that unpack that claim, since they all deal with changes, tradeoffs, or both.
Goal
If we correctly found the Main Conclusion (the 'highest' Opinion that the author supports), then picking an answer is merely about finding the best language match for that claim.
We're looking for the best meaning match for the 2nd sentence.