A research team captured 117 healthy bats and divided them i…
A research team captured 117 healthy bats and divided them into four groups to study in the laboratory a pathway of transmission of deadly fungus Geomyces destructans. Group 1 was housed in an area free from the fungus Geomyces destructans. Group 2 was housed in an area that shared the same air as bats already infected with the fungus Geomyces destructans, but these bats did not have direct contact with the infected bats. Group 3 was housed in direct contact with other infected bats. Bats in group 4 were directly exposed to the fungus Geomyces destructans when it was applied to their wings. During the study period the bats were monitored for signs of infection. Which group is the control group?