C错在哪

问题如下：

Which one of the following statements is true about non-probability sampling?

选项：

A.

There is significant risk that the sample is not representative of the

population.

B.

Every member of the population has an equal chance of being selected for

the sample.

C.

Using judgment guarantees that population subdivisions of interest are represented

in the sample.

解释：

A is correct. Because non-probability sampling is dependent on factors other

than probability considerations, such as a sampler’s judgment or the convenience

to access data, there is a significant risk that non-probability sampling might

generate a non-representative sample.