The best and most correct answer among the choices provided by your question is the third option which states that "<span>people can influence policies by voting for or against public safety and welfare services". People always has a voice in government policies through the means of a plebiscite or a memorandum.</span>
The answer is D. It is not specific at all. It doesn't even say what is wrong with the article, story, etc.
The correct answer is D. In 2008, more than one million American students gave nearly 20 million service hours to their communities.
Explanation:
In texts, including articles the introduction is commonly the first paragraph in a text that introduces or presents the general topic and the point or points that will be explained during the text. Besides this, it is common the first sentence of an introduction includes a quote, a question, a piece of statistical information or a strong statement that acts as a "hook" catching the readers attention.
Considering this, in the case of the article presented the sentence that beings the introduction is "In 2008, more than one million American students gave nearly 20 million service hours to their communities" because this is the first sentence in the text and therefore the first sentence in the introduction, besides this, the sentence presents statistical information that as a "hook" for readers and introduces or presents the main topic that is volunteer service.