The correct option is D.
Vampire bat feed on the blood of mammals. Vampire bats who share their food do so by regurgitating blood for their fellow vampire bat. Vampire bat prefers to share their food with relatives and kins and with those bats, who have helped them out in the past when they were hungry. Vampire bats who share their food tend to have more successful kill.
human factors are littering pollution in water or air. Non human factors are glaciers melting away and falling erosion or weathering
Answer:
self confidence is the altitude about your skills , abilities. It also means that you have to believe in you.
The answer would be that, it can mean excessive medical tests. Hope this helps.