A) meanings of words.
B) importance of nonverbal signals.
C) use of time and space.
D) all of the above.
Explanation: D) Culture influences everything about communication, including language, nonverbal signals, word meanings, time and space issues, and rules of human relationships. From the earliest age, cultures help human beings make sense of their environment, helping them interpret forms of communication that are both verbal and nonverbal. The language a person speaks is obviously dependent on culture. Not so obvious are more subtle things, such as the way various nonverbal gestures and clues are transmitted and interpreted.