The primary method that people use to sense their environment is: A. reading B. writing C. speaking D. seeing E. None of the above

The correct answer is D. seeing.

Seeing is the primary method that people use to sense their environment. It is the most important sense for humans, as it allows us to perceive the world around us and to interact with it. Without sight, we would be severely limited in our ability to function.

Reading, writing, and speaking are all secondary methods of sensing the environment. They allow us to process and understand information that we have received through our senses, but they do not provide us with the same level of direct experience as sight.

None of the above is also not the correct answer, as it does not provide a specific method of sensing the environment.