One of the Drawbacks of Amazon Mechanical Turk (AMT), a Crowdsourcing

Multiple Choice

One of the drawbacks of Amazon Mechanical Turk (AMT) , a crowdsourcing website, is that:

A) its workers are deprived of compensation for their participation.
B) its workers are allowed to participate in a number of similar experiments.
C) its workers are less educated than the general population.
D) it forces researchers to rely on college students as participants.