Read the following article and answer the question by choosing from the options.

I think we realized then how quickly the heat can kidnap a person 's energy . Also , we were eating , but not as well - or as regularly - as we should have . In the coming days , we would make a better effort to revitalize ourselves with energizing guarana powder dissolved in fresh , cool river water and treats liked canned peaches and milk . The next day would be our longest on the river .

What may I be currently doing ?
Possible answers:
(a). Swimming
(b). Camping
(c). None of the above choices .
(d). Skiing...A:
(b).