I think its B but dont click it cuz im in elemtary and 2nd i only know a little bit of health stuff cause my mom is a doctor are you being a doctor as ur job?
<h2><u><em>In a 4/4 time signature, a whole rest lasts for four beats, a 1/2 rest for two beats, a 1/4 rest for one beat and an 1/8 rest for half a beat. An eighth rest is half the length of a quarter rest.</em></u></h2>