1. D you can't change the lens. Point and shoot cameras have a fixed lens so you don't need to change them.
2. C D-SLR. They have fast shutter and focus speeds for photography. They are used in a lot of professional settings.
The output will be four because y and x are equal and that satisfies the condition for the else if statement that prints out four.
It is known as a URL or domain name. But the .edu URL stands for an education website.
