When presenting a topic, which of the following is the BEST way to establish eye contact to ensure learner interest and participation?

Look around the room as to not intimidate any specific learner. 

Briefly make eye contact with each learner as the instructor moves around the room. 

Stop and look at each individual for a few seconds to let them know they are important to the class. 

Avoid contact and focus on the media being used so the learners can do the same.