How did you figure out the number of neutrons in each atom?

To get number of neutrons, you must have the mass number and atomic number of that atom.

atomic number is number of protons

it's all four options.

sup bro, im dumb, but this is what i found xd

"the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface"