Can you pick more than one?
You should try to strt a conversation with him or say hi introduce yourself or ask him how hes doing just talk to him i guess
D. To answer this question refer to the periodic table and think logically about it. Adding one proton increases the atomic number so you go along the row to Nitrogen. If you lose one neutron then the atomic mass decreases by 1 so 14-1 is 13.