Which of the following is a tool used by effective listeners to increase focus on the speaker?

A) Passive listening
B) Taking as few notes as possible
C) Using the same style in all situations
D) Staying focused on the speaker and content
E) Identifying stylistic differences

Staying focused on the speaker and content is a tool used by effective listeners to increase their focus and attention on the speaker. This means avoiding distractions and actively engaging with the speaker's message. Passive listening (A) requires little effort and does not actively engage with the speaker. Taking as few notes as possible (B) may be helpful for some, but it is not a tool that works equally well for all individuals or situations. Using the same style in all situations (C) may limit the listener's ability to adapt to different situations and speakers. Identifying stylistic differences (E) may be helpful for understanding communication patterns, but it does not necessarily increase focus on the speaker.