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.
There are only two which are in the question
Peace and piece
True, the speaker in the poem, a farmer, is concerned with loyalty: He is struggling to decide how much loyalty he owes a none-too-reliable former employee who has returned in his absence and whom his wife says is dying
<span> Wilson was mad (as in crazy). </span>