It is the first statement. It is positive two, so it’s above sea level. We can immediately get rid of the last two statements. Then, it is negative 20. The is 18 feet below sea level, because 2-20 is -18. Positive 8 shows rising up by 8 feet. The correct statement is the first one.
He was gone for two weeks means he was gone for 14 days. If it drains 3.84 per day, he will lose oz of water equivalent to (3.84 x 14), resulting in him having 266.24 oz when he gets back.