What one will it be i tried every way unless anyone else knows how

What exercise allows you to specify the muscles to be traineda. i sonicb. anaerobicc. isometricd. aerobic

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

Can someone give me one specific health problem (within unhealthy eating) and explain it. !