How do i do this it is for science and i do not want to fail

The small circle has 2 on each side and the rest have 8 as you can see but put them into pairs. you know how many to put based on the amount of protons (:

The correct option is A.
Radioactivity is part of the human existence on earth. It has been discovered that naturally occurring radioactive materials are present in the earth crust, in the food we eat, in the gases we exchange, etc. Humans are continuously exposed to radiations from both the earth and outside of the earth. The radiations that man is exposed to in the earth are of two types, natural and artificial radiations. Both can be harmful at diverse doses. Note that no scientific investigation has established it that natural radiations are quite harmless at their natural doses.