<span>An example of concentric contraction is doing a biceps curl. The curl exercise is targeting the biceps muscles on the front of the upper arm and only several muscles assist during the movement. Moreover, concentric muscle contraction is a type of muscle activation that increases the tension on a muscle as it shortens and this activation begins the process of muscle strengthening and hypertrophy. </span>
Hi,
Since Erin read 15 minutes every day for 6 days, here's what we have to do.
We have to multiply 15 by 6. 15 x 6 = 90 minutes.
So Erin reads 90 minutes in 6 days.
I believe the answer is Extension. Considering flexion would decrease the angle. Hope this helps :)
The Answer is true i think