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

They geared us up in wetsuits and splash jackets to ward off the cold temps which are compounded by cold water . The river was running at about 820 cfs ( cubic feet per second ) but had topped out this year at 3600 cfs and will go as low as 250 cfs ( 1 cfs is the amount of water equivalent of the size of 1 basketball ) . At 3500 cfs the water runs very fast but most of the technical aspects of the river ( i.e. boulders in the middle ) are covered up , so while its a fast run , its not as technical .

What might they be doing here ?
pick from the following. (i) They might be kayaking (ii) They could be looking for cockles (iii) They could be swimming (iv) None of the above choices ....A:
(i)