It is round or say spherical to widen the range of photography and it is designed to focus the image as the ray are coming from infinity so !!
I am not an expert of camera but ya it is the main theme !!
To make the nucleus more stable
Answer:
Isn't love a social construct?
Explanation:
It's definitely not B or C. There are things missing from A and D so we can't narrow it down any farther.