I'm pretty sure the pancreas
Answer: Down syndrome and cystic fibrosis
Then answer is b. Cnidaria
Answer:
When people lift weights, microscopic damage (microtears) occurs to the myofibrils within the muscle fiber. These microtears stimulate the body's repair response. ... The increased number of myofibrils causes muscle fibers to enlarge, increasing their volume and size.
Explanation: