Answer D for question 1 and answer B for question 2.
2 would be the correct answer because without a setting no one would have any clue where the current situation was taking place.
The sentence that shows the proper way to use a colon is: Van Gogh painted my two favorite pieces: Starry Night and Sunflowers. The punctuation mark, colon (:) is generally used when introducing a list. But a certain rule is applied when using this punctuation mark. It should not be used if it is directly followed by a verb or preposition.
4. hints more at the subject going to many future places "everywhere you may go" - he is expected to go "everywhere". 5. is more of an open, 'nobody knows where you'll go' kind of sentence, 6. is quite alike to 5. If you have to pick one for fluency, I think that 5 flows the best.