Which pair of graphs represent the same motion of an object

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

What is a cordon and where is it found

An easy way to calculate the amount of energy available at each level is to what?