Different communication codes refers to
a. the language we speak
b. our nonverbal communication behaviors
c. both a and b
d. neither a nor b

The answer to the question stated above is letter c. It's both a and b.

Different communication codes refers to the language we speak and our nonverbal communication behaviors.
> In semiotics, a code is a set of conventions or sub-codes presently in use to communicate meaning. The most common is one's spoken language.
Example: red, red means danger.

The songs were performed with the singers' eyes closed so they could focus on the words and preserve every detail.