The answer is the 4th one
The answer is B.<span>Where can I substitute?</span>
The answer is they have more questions in their mind at the end
They made a huge profit by doing things the proper way.
The answer is B. Keyword being "theory of radioactivity" and "influential scientists of the century." It's a persuasive keyword that will hook the readers. What is theory of radioactivity? How did her theory garner her the title of influential scientist of the century?
Choice A is vague and hardly persuasive. It's only characterizing her traits: curious and determined.
