Reconstruct a question, answer pair from this explanation: Most people can survive only a few days without water. H20 Bottled water was generally consumed last year. Most people can survive only a few days without H20.

Q:Most people can survive only a few days without what?
Options:
- (A) h2o
- (B) urea
- (C) CO2
- (D) beds
- (E) houses
- (F) air
- (G) NaCl
- (H) H20
A:(H)