Both C and D are the answers. But I will go with D
During the 1960 debates between the two candidates, Americans for the first time could tune in and watch the debates on television, or listen on the radio. ... When they turned on their television sets, they saw a tired Richard Nixon and a tanned, fit John Kennedy
Slowly extending stretches until the muscle hurts
Gradually increasing the challenge level of stretches
Quickly swinging the arms back and forth for more stretch
<span>Intensely holding stretches for five to 10 seconds</span>
