Answer:
D) They are trying to look like they are interested, while they are actually in a stupor of daydreaming.
Step-by-step explanation:
All the actions that the audience are doing indicates their disinterest towards the speech. Although they are trying to hide it but their body language cannot hide it. The audience members are trying their best to show that they are interested but in doing so inadvertently show their disinterest.
When something which is not interesting to person is going on then their mind wanders, this is clearly visible even though one might try to hide it.