What's the origin of this question? Just curious, as it's always important to be sure you are learning from reputable questions.
That said, here's the strategy to deal with Boldface CR:
Identify whether each sentence or clause is a piece of evidence, a conclusion, or a stated assumption using a pre-determined set of symbols.
Assigning symbols will help you move through the passage quickly and efficiently. Basically, you're CHARTING the STRUCTURE of the argument, how it's laid-out. There's no way to determine the ROLE of the boldface unless you understand the ROLE of each sentence.
Here's the symbols I use:
MC = Main Conclusion (the author's argument or position)
OC = Opposing Conclusion (an argument in opposition to the main conclusion)
F = Fact (basic given information, backstory, premise, etc.)
A = Stated Assumption (think of this as part of the passage that "links" given facts/evidence to stated conclusions, these are rare)
E (+) MC = Evidence Supporting Main Conclusion (this is what the author cites to support his conclusion)
E (+) OC = Evidence Supporting Opposing Conclusion (this is evidence that is cited in support of the opposing conclusion; it undermines the author's conclusion and can also be expressed as E (-) MC).
If that seems like a lot, simply
ask yourself: is this sentence FACT or OPINION? If it's a face, it's either a plain FACT being used to provide backstory, or it's EVIDENCE used to bolster an opinion. If the sentence is an OPINION, then it is either the author's opinion (the opinion of the person writing the paragraph, the main or secondary conclusion), or it is the opinion of the opposing side.
So, now that we have a strategy in place, we can apply it to this passage.
First sentence: F (backstory + a condition)
Second sentence: F (explains new research)
Third sentence: A (author is making an assumption about judge's expectations)
Fourth sentence: MC (this is an opinion)
Now we know what the two boldface portions are: the first is a FACT that sets up backstory, the second is the MAIN CONCLUSION.
The only answer choice that matches this is [spoiler](C)[/spoiler]. You can check out my approach on more CR problems on my blog:
https://gmatrockstar.com/category/gmat-verbal/