The scientific community has long been fascinated by the human brain. The brain is a complex and delicate organ, and scientists are constantly striving to understand its workings. One of the most intriguing aspects of the brain is its ability to learn and adapt. Through a process known as neuroplasticity, the brain can change its structure and function in response to new experiences. This remarkable ability allows humans to learn new skills, recover from injuries, and even overcome challenging life circumstances. But even with all this progress, there is still much that we don’t know about the brain. How can we best understand the human brain?
","stem_html":"Which choice best maintains the sentence structure and sense of the passage?
","rationale_html":"Choice B is the best answer because it maintains the sentence structure and sense of the passage by using a comma to introduce a contrasting idea. Choice A uses a semicolon incorrectly; the clause after the semicolon could stand as a complete sentence. Choice C uses a semicolon incorrectly; the clause after the semicolon could stand as a complete sentence. Choice D uses the word "However" incorrectly. The text does not introduce a contrasting idea. The most logical and grammatically complete sentence is "Even with all this progress, there is still much that we don’t know about the brain."
","correct_answer":["B"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"But even with all this progress; there is still much that we don’t know about the brain.
","ord":0},{"label":"B","content_html":"Even with all this progress, there is still much that we don’t know about the brain.
","ord":1},{"label":"C","content_html":"However, even with all this progress; there is still much that we don’t know about the brain.
","ord":2},{"label":"D","content_html":"However, even with all this progress, there is still much that we don’t know about the brain.
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