I don't know what you have to choose from, but it has to be somewhere along the lines of your elbow bending to approximately a 90 degree angle and then straightening your arm out again. And you back, hips, waist, and posterior cannot be arched.
The answer to this question is #2
Which key nutrient has been known to reduce the risk for heart disease for all adults over the age of 51?
d. vitamin b12