Which sentence shows the correct use of the dash?

a. certain images--such as a lion can be used to symbolize power.
b. certain images--such as a lion--can be used to symbolize power.
c. certain images such as a lion-- can be used to symbolize power.
d. certain images--such as--a lion can be used to symbolize power.

B. Certain Images--such as a lion--can be used to symbolize power.

Explanation:

One of the functions of dashes is to enclose clarifications, explanatory content, remarks, or further information that is not essential to the meaning of the sentence; it can be used in pairs (when they are in the middle of a sentence) or alone (mainly when they are at the end of the sentence). From all options, sentence B is the one using the dashes correctly because they are being employed to enclose additional and explanatory information that, if removed, would not affect the meaning of the sentence.

b

explanation:

write a five paragraph essay, you were taught to have three body paragraphs. a university essay is more flexible than that, depending on its length and on what it is trying to say. a short university essay may have three body paragraphs, but it may have more.