Awareness of object permanence is not yet complete in Piaget's Substage 4 because babies . a. still make the A-not-B search error b. have schemes with a hit-or-miss quality c. have schemes that appear as sudden solutions d. are not yet able to retrieve hidden objects

According to your text, the best way to reduce the number of germs is by ventilating spaces and a. cleaning all toys, books, and materials every day. b. keeping all potentially sick individuals out of the center. c. minimizing strenuous physical activity among the children. d. cleaning, sanitizing, and disinfecting surfaces and materials.

This anterior tooth has a single root and sharp incisal edges. it has mamelons upon eruptions. this tooth is a a. maxillary central incisor. b. mandibular central incisor. c. mandibular canine. d. maxillary lateral incisor.

High blood pressure is best described as