Question

what is the function of the dashes in the following sentence? at last, i have arrived in london—a city centuries old that ive always wanted to see—and i cannot wait to start exploring. ○ to indicate a dramatic interrupting idea ○ to set off a long appositive ○ to set off a list that is already punctuated ○ to signal an abrupt change of thought question 21 1 pts what is the function of the dashes in the following sentence? barry slammed on the brakes of his car—his heart was pounding—and rushed out to rescue the dog he almost hit. ○ to set off a list that is already punctuated ○ to indicate a dramatic interrupting idea ○ to indicate an unfinished thought ○ to set off a long appositive

Explanation:

First Question (about the sentence with London)

An appositive renames or explains a noun. In "London—a city centuries old that I’ve always wanted to see—", the dash - set phrase explains "London". A long appositive (with extra info like "centuries old..." ) is set off by dashes. Other options: "dramatic interrupting idea" is not right (it's explanatory, not dramatic interruption), "set off a list" is wrong (no list), "abrupt change" is wrong (no thought change).

The phrase "his heart was pounding" interrupts the main action (slammed brakes, rushed out) and adds a dramatic, interjecting thought about his state. "Set off a list" is wrong (no list), "unfinished thought" is wrong (the thought is complete), "long appositive" is wrong (it's not renaming a noun).

Answer:

to set off a long appositive

Second Question (about Barry's sentence)