Word bank : electron, electron cloud, neutron, nucleus, & proton . btw i didn't know what class to put it under but it's science and like can u not guess lol i needa pass this usatp -

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

d is the correct answer