Answer:
face the speaker
make eye contact
Step-by-step explanation:
The two things that are required for demonstrating that you are attentive towards the speaker is the face the speaker and make eye contact so that the speaker could understand that you are listening to him or her also at the same time he gets motivated that people are listening to him or her
Therefore in the given case, two things are facing the speaker and eye contact and the same is to be considered