I think either A or C because B doesn't make any sense.
Answer:
A. Rolling over: gross motor skill
B. Drinking from a cup: fine motor skill
C. Sucking: reflex
D. Crawling: gross motor skill
E. Grabbing a finger placed in the baby's hand: reflex
F. Picking up food with the thumb and forefinger: fine motor skill
Explanation:
<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>
