What does the word " Geocaсhing"mean?

Варианты ответов и условие задания

1. Geocaching is an outdoor recreational activity, in which participants use a Global Positioning System (GPS) receiver or mobile device and other navigational techniques to hide and seek containers, called "geocaches" or "caches", at specific locations marked by coordinates all over the world.
2. Geocaching is an outdoor recreational activity, in which participants use a Global Positioning System (GPS) receiver or mobile device to hide and seek containers, called "geocaches" or "caches".
3. Geocaching is an outdoor recreational activity, in which participants use different navigational techniques to hide containers, called "geocaches" or "caches", at specific locations marked by coordinates in your native country.