When a chemical has occured on you clothes you should ?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d. a round-trip ride to school and back

Ais a group of individuals of the same that exist together in the same place at the same time

I’m stuck on this question cuz i’m stupid sksksksk