Answer:
The right answer is B.
*Hydrogen is the most abundant element representing nearly three quarters of the mass of the universe.
*Hydrogen is found in the water that covers 70% of the surface of our planet as well as in all organic matter.
*Hydrogen is the simplest element in the universe. It is composed only of one proton (p) and only one electron (e-).
*Hydrogen is the lightest element of all elements and gases; it is 14 times lighter than air. A "spill" of hydrogen gas immediately diffuses into the air and pollutes neither the ground nor the water table.
*Hydrogen is invisible, odorless and nontoxic. It does not cause acid rain, does not deplete the ozone layer and does not generate dangerous emissions.
Answer: The best answer for this question would be your last option:
A poem is timeless, while a story is tied to a particular place and time.
Hope this helps!
Yesssssss I am here
I am in class
The best structured sentence that best uses the comma is the second sentence being: The female statue, crowned with a wreath of olive leaves, represents commerce. The sentence talks about a statue that is crowned with leaves and symbolizes business. The second sentence perfectly captures that.