Which of the following is not a function of proteins?
a. store and transmit heredity
b. to fight disease
c. control the rate of reactions and regulate cell processes
d. used to form bones and muscles

What isn't a function of proteins is storage and the transmission of heredity - a. For this job we have DNA and not proteins. For all the other things you've listed - help in fighting disease, control over the rate of reactions and regulation of cell processes and bone and muscle formations all are example of what proteins do. 

A.children playing educational games

C= $20.45, you do how many songs multiply that by each song cost and add $9.95