Read the sentence. 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. which revision of the sentence is now properly punctuated? a. 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. b. 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. c. 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. d. 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.

D. 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.

Explanation:

The uses of hyphen are for separating groups of words, in this case we need to separate the explanation of what the peripheral nervous system is, from the functions that it has, so in order to do that we use the hyphen, a tip to properly use hyphen is to read everything that´s not inside the hyphen and it has to be understandable, that´s how you know that you´ve properly punctuated the sentence.

1. the details that would clarify the authors purpose for writing would be after the "haley collected used soccer jersey and sent them to guatemalan children." part, he would say, "and you can also donate today to save ". so far in the text, you can see no such thing. if, near the end the author persuades you to donate to guatemalans, then you know that the author's reason to write is to persuade you.

2. what details would make the text more engaging is to see the guatemalan children's reaction to getting free jerseys.

3. the details that convey the author's attitude would be an opinion by the author, for example, if he said, "haley was a very nice girl " or, you can find the attitude by finding parts of haley's personality that he highlights. you can strengthen your tones by using more descriptive words, and simplify long sentences as much as you can.

you're welcome ; p

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).