This is a test of commonsense with single/multi-choices. Complete the next sentence:

There's a large team of participants getting ready to do engage in a water tubing activity. They walk down a hilly terrain to the river. they

Choose your answer from: * cross the slow moving waves that roll through from a river.; * get onto their tubes and begin going down the rapids.; * use several different ropes as they hop along the uneven river waters.; * are all doing tubing stunts on the water.;
The answer is:
get onto their tubes and begin going down the rapids.