Final answer:
Effective listening excludes engaging in mental multitasking, as it requires full attention to the speaker for understanding and empathy.
Step-by-step explanation:
A person demonstrating active and effective listening does not engage in mental multitasking. Active and effective listening includes several key behaviors, such as providing feedback to the speaker, avoiding interruptions, making eye contact, and showing understanding and empathy through body language and verbal responses. Therefore, to listen effectively, it's important to be fully present and attentive to the speaker, focusing solely on their words, emotions, and nonverbal cues without engaging in mental tasks that could distract from truly understanding the message.