Select all that apply. language is which of the following?
a. a system of signs representing ideas
b. any means of communication
c. arbitrarily constructed
d. governed by rules

I would say that all of these options can be applied to languages. Language is a system of signs representing ideas - we have our letters, or characters in Asian languages that help us write down what we want to express. B is also correct because when you communicate, be it verbal or nonverbal communication, you are using a form of a language. C is also correct because all languages have been made up by someone. D is also true because all languages have some kind of rules that govern them.