A subhead because it is just telling what the paragraph is about
The author's word choice gives the reader insight into the dialect of the speaker. The written pronunciation of some words show what the character would sound like speaking, which gives an indication of where they are from or what they're like.
Actually..... all of them are correct!
The difference is whether the word "the orchestra" needs a plural or singular verb. In American English a singular verb is needed (so American English would only accept options a) and c) ) but in British English both forms are acceptable: so in British English all four sentences are correct.
<span>To protect national-defense material, premises, and utilities.</span>
