What operating activity involves contacting as many stations as possible during a specified period?

Contesting, also known as radiosport, is a competitive amateur radio activity where operators try to contact as many other stations as possible within a given timeframe. Participants exchange specific information, such as their signal report and location, and earn points based on the number and distance of their contacts. The other options describe different amateur radio activities. Net operations are organized on-air meetings for passing messages or discussing specific topics. Simulated emergency exercises are drills to practice disaster response, and hidden transmitter hunts (foxhunts) involve using direction-finding equipment to locate a single hidden beacon.