Answer: The answer is learning, learning is the process of acquiring knowledge or skills through study, experience and teaching.
Explanation: This is because through learning a person will be able to acquire new skills and learn new things. Learning can be done through studying books, what others has experienced or by paying attention to the teacher while delivering lecture.
I feel that C. is definitely one of the answers. D. might also be an answer.
Answer:
make sure to read the passage right because I cant understand what can be the answer mabye give me a quick summary and I can answer