Read the text to answer 17.

“There’s nothing better for me than to spend a vacation on the beach. You just unwind and get the most of nature by simply soaking up some rays by the cristal clear waters. It is also a chance to know new places and discover the pleasure of sports. My wife and I have recently done all that. As we drove our motorcycles along the beaches, we left ____________________ in the sand and could experience the wind caress on our faces.”

The item that fits the text is: