The given statement is true.
Explanation:
In the given context Carrie is using non verbal communication to regulate interaction. When two person are in conversation and one of them is not confident enough or pretty much sure about answering or reacting in a question or in a situation at that time he used to follow sign languages in terms of eye contact occasionally or nodding intently or sometimes ask question to the speaker.
Non verbal communication is popular to regulate interaction in an effective way where verbal communication is not working properly due to lack of confidence or little knowledge.