Air marshallers , aircraft carriers
I would go with D, because it seems that there is no answer option you wouldn't use in a presentation. Hopefully this helps
Answer:
Abstruse means "difficult to understand".
Answer:
here is explanation below
Explanation:
Digital media use some techniques and mechanism such as compulsive checking to keep people hooked. The technique seem persuasive as it continuously gets to make people to keep returning on regular basis.
With social proof, (where an online information can be retweeted severally to make users quickly go online and read them), people could be kept so addicted to the digital media. It also uses reciprocity, where more friends can be invited to a platform for one to earn more points. So the more your friends, the harder it becomes to leave such platforms.
Self-exclusion and lock-out scheme can be used to put a control to the addiction. Users could be alerted when it seems their usage pattern indicates certain level of risks.
