C because of the apostrophe after the s which indicated that they both participated
Answer:
Today, thousands of people around the world are doing just that through geocaching. Geocachers seek out treasures hidden by other players while exploring interesting locations. At its most basic level, geocaching is a game where players use GPS receivers to track down a container, or cache.
Explanation:
SWAG for trading. SWAG = stuff we all get. ...
Extra logbooks and pencils. Yes, it's the cache owner's responsibility to maintain their caches. ...
Snacks and water. ...
Sunscreen. ' ...
Bug spray. ...
Rain gear. ...
Tools of the Trade — TOTT. ...
Flashlight.
