Final answer:
Crowdsourcing can encounter problems such as errors, bias, and unrepresentative samples due to response bias, selection bias, and sampling errors, which can affect the accuracy of the data collected. The correct option is A, B and C.
Step-by-step explanation:
The potential problems of crowdsourcing include the potential for errors, bias, and issues related to the unrepresentativeness of the sample. Crowdsourcing can lead to errors like response bias, where respondents may not accurately report their true opinions. This could be due to factors like social desirability bias, where respondents answer questions in a way that makes them viewed favorably by others.
Another issue is selection bias, which happens when the method by which a sample is chosen causes it to be unrepresentative of the population, thus the results do not reflect the true characteristics of the entire group.
Moreover, crowdsourced data can also have sampling errors if the sample size is too small or not chosen randomly, leading to an inadequate representation of the population.