Answer: C. In communication, talking is generally as important as listening
Based on the book of Job Survival Instruction, communication plays a big role in a job or workplace for it keep the working environment run smoothly. In communication, talking with sense and respect is as important as listening.
Moreover, an individual is not worthy in his job if he will not talk effectively. Even if he is good in listening but he cannot relay important messages in his co-workers and to his superiors, then the employee is not competent to do his job.
Therefore an efficient communicator or speaker is as vital as a good listener in the workplace or even in real life.
Are there any answer choices?
Infrastructure, because it's not a part of the environment, it's not a form of transportation, not a service either. Thus the only remaining answer is Infrastructure
The answer is C and D, because weight loss and pain doesn't do anything.