Answer: Yes
Explanation:
Plagiarism is the wrongful activity in which a person tends to extract information from someone else's work and present it as their own.It is type of copying practice in which credit to the original content or source owner is not given .
According to the question,Charles should be worried for carrying out plagiarized act by taking information portions from other's source through internet and then passing it off in classroom speech as its own. It would be impacting his credibility and reliability as spokesperson as well as individual because of committing illegal act.