Answer:
b. unable to tell from the information given
Explanation:
We have only been given the amount of water rainforests receives in a year. No other information has been given. So also, we cannot make any further assumption and deduction from the information provided to us. In order to know the amount of water evaporated in a year, we should have been given the rate of evaporation in the rainforest. We cannot deduce the amount of water evaporated from this data.