Sentence Correction (SC) | Re: What is dash meant for..?

Raths,

Although the dash is pretty rare on the GMAT, it certainly does show up and is therefore worth discussing. Most often, the dash can take the place of a comma under a few specific scenarios:

1. The dash can serve to see off a list:

"I went to the mall with my friends -- Jim, Joe, and Jerry -- and bought a new pair of pants." Here, my friends names are "Jim, Joe, and Jerry." Often, people use commas here. The issue with commas is that it would be slightly ambiguous:

"I