Answer:
D.
Step-by-step explanation:
Coming out from behind the podium helps to minimize barriers between you and the participants, so that way your presentation is more likely to be heard or accepted. On the contrary, standing behind the podium will put you in a place of authority and it will make it difficult to empathize with who's listening and to give them a chance to participate.
The answer A, is not correct because you have to study your presentation but not memorize the content. If you memorize the content as an a script it will be more likely to forget some things.
It's good to make eye contact as described in answer B, however, if you maintain eye contact with just one person, you leave the other participants out, and will make it difficult to cut the barriers with them.
At last, the answer C is wrong because if you stay in a fixed position, you won't be comfortable to stay loose and make your presentation more distended.
Hope it will help you!