If the boy travelled 2 meters to the right and 4 meters to the left what is the total distance that he travelled? 4 m

-4 m

6 m

2 m

Is there any opitions? if you have the periodic table, the noble gases are 8a family, the halogen are the 7a family, and the nonmetal are  carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, fluorine, chlorine, bromine, iodine and astatine.