When writing, you can most effectively use a dash a. to add a formal touch to a sentence b. in place of an exclamation point c. in place of a semicolon d. to get the reader's attention. i'm guessing it's either c or d

there is no excerpt.

put the excerpt in the comments and ill answer.

answer: the sentence in the text that contains both the topic and the author's single most important idea about the topic

explanation: aww pineapple so adorable

the answer would be c