Scientists must be open to questioning everything, even the things they think they already know. Which sentence from the article provides the BEST support to the statement above? (A) Scientific discoveries do not take place overnight, and many are small and gradual. (B) Chances are, you'll stumble many times before you find your footing, and that's OK. (C) We live in a world where knowledge and uncertainty can and do coexist. (D) When we are curious about other people, we can become more compassionate.