C - both A and B. The digestive system does those two.
Answer:
Some behaviors, like self-stimulatory behaviors, are reinforced automatically. Rocking, hand-flapping, and stereotypies are repetitive behaviors that are automatically maintained.
Health claims link the use of a food product to certain health risks or benefits.
Answer:
Physical fitness is generally achieved through proper nutrition, moderate-vigorous physical exercise, and sufficient rest. C.