Tantrums during toddlerhood, also known as the "terrible twos," are universal across the world.

When infants turn their heads and suck in response to a touch on the cheek, they are demonstrating the

Moro reflex. rooting reflex. sucking reflex. Babinski reflex.

Bob is going to the doctor for treatment of a painful back condition. The doctor regularly manipulates Bob's spine as part of the treatment. Bob's doctor is practicing

A) alternative medicine. B) homeopathy. C) chiropractic manipulations. D) conventional medicine.