As a Piagetian, Avery would consider the highest accomplishment of the sensorimotor period of development.

Using symbols

Explanation:

Piaget was a Swiss Psychologist who came up with the Development Stages theory.

It is divided into four stages

sensorimotor stage is between birth months and 2 years. The development will begin with simple reflexes.

It advance to the infant developing abilities to use primitive symbols and it is the beginning of true creativity.

Therefore, Avery would consider using symbols the highest accomplishment of the sensorimotor period of development.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.