Answer:
A. Make sure you cite a reliable source.
Explanation:
B. There are many unreliable materials that could be simply "printed". Being printed does not show reliability.
C. Since Wikipedia can be edited by anyone may find it untrustable to use.
D. Many .com websites can be a fake commericial website that has "fake" news.
Therefore A is the best choice for quoting a statistic. Citing from a reliable source will allow for trustability to be gained by the readers for your work.
I believe it’s B. because his father told him not to go onto the ice and George knew what he was doing would probably have a consequence behind it so hesitates contemplating whether or not should he listen to his father or go on the ice and show his friends he’s not scared or whatever. :>
All these questions depend on what you studied, no one can help you here. Go study and good luck.