Can someone please help me with this, I don't have much time!!!

Name the most appropriate metric unit for each measurement

Having a hard time understanding this question (see attachment).

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question