Which revision of the sentence is now properly punctuated? the peripheral nervous system—which is a network of nerves extending from your brain and spinal cord to all parts of your body carries signals back and forth. the peripheral nervous system (which is a network of nerves) extending from your brain and spinal cord to all parts of your body carries signals back and forth. the peripheral nervous system which is a network of nerves extending from your brain and spinal cord to all parts of your body carries signals back and forth. the peripheral nervous system—which is a network of nerves extending from your brain and spinal cord to all parts of your body—carries signals back and forth.

The revision of the sentence that is properly punctuated is the last one, the one with the em-dash.

Explanation:

The em dash is one of the most versatile punctuation marks as it can take the place of commas, parentheses, or colons. In this case, the em dash has been used instead of the parentheses. Yet it is important to bare in mind that em dashes are less formal than parentheses and they are also more intrusive. You can use them to draw attention to the parenthetical content. In this case, the use of the em dash highlights the definition of the periphereal nervous system.

honestly, school in itself just seems to be a huge waste of time. a lot of people graduate but still end up not doing anything in college anyways, which really makes the whole point of graduating seem useless. i'd rather not bring anyone's hopes up then. what i'd recommend is for whoever's reading this to simply drop out.

i mean, kanye did it. he said something along the lines of, "don't let society tell you what to do." now, he's obviously a very successful person, and since his album is called the college dropout i guess he never really had to go through all that nonsense in order to become a millionaire. the same goes for anyone else then.

i have 15 more questions to answer and i’m a english person