HELP ASAP PL

What is Chemical energy?
A)energy carried by light
B)energy of moving electrons
C)holds protons and neutrons together in the nucleus of an atom
D)holds the atoms in the molecule together

The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?