Answer:
Information overload
Step-by-step explanation:
In sociology, the term information overload refers to the fact that when a person has too much information coming from their senses and this makes it difficult to understand or acquire new information coming from the environment.
In this example, Courtney is continuously checking her mail and texts responses while in her biology lecture and she has trouble understanding the concepts from the class. We can see that she is having an overload of information (from email and texts) that are making it difficult for her to acquire the new information she needs to learn. Thus she is experimenting information overload.