B.
<span>Unemployment is high in many fields, but there are jobs available in telecommunications.
A comma is used when it is placed after the end of one independent clause and the beginning of another which follows one such clause. The two independent clauses must be joined with words known as co-ordinating conjunctions. Examples of such words are, but, and,or so etc.
In this sentence but is used, </span>preceded by a comma so it is the right one.
Answer: D. The system of public works
Explanation:
What do buildings and highways have in common? Public works.
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a chart showing how commonly used chemicals negatively affect farmers' health
The multimedia presentation is about the harmfulness of standard farming methods, as compared to organic farming techniques. This chart shows how standard farming techniques can be harmful, so it is the best choice. The quote from a farmer about the difficult process of applying chemicals is not an effective visual aid. A map showing the number and locations of organic farms only shows the prevalence of these farms, not how they are less harmful than standard farming techniques. A photo of people enjoying fruits and vegetables also does not aid the audience in a better understanding of the presentation's topic.
<span>The game, which lasted twelve innings, ended with a Red Sox victory! is the correctly punctuated sentence.</span>
