It’s a I hope this help you :)
I think the correct answer would be 2. Medical schools have begun to employ extended residency programs to help decreased doubt and improve the application of medical knowledge. In this way, doctors would have more experience and understanding on the nature of their career and on actual applications they are much more experienced.
Because its air we cant see it thats why its clear because it would be scary if we were able to see air! :)
