It’s be B because it neither forceful nor dramatic it’s also not gentle, it could be in a way, but encouraging us your best option.☺️
Well here the author says that inner voice of us reveals our feelings, regrets in other words what we live in our life is reflected inside of us. So he gives the example of water .Like our life, it runs quickly and our life also one day will be cut off which means it 'll come to an end. So this sheet of water is one of the pages of our life which is one part of in our long life journey.
The punctuation looks correct..
