"Complete the following sentence. is the process of acquiring knowledge or skill through study, experience, or teaching."

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.

"the sandy walls seemed to collapse in on themselves"

and

"the bloodshot waters seemed to have no bottom"