Shay is a nursery school teacher who works with two and three year old children. Because she knows this is the time when most children become potty trained, she uses a technique in her classroom that encourages this behavior. Every child gets a sticker chart that the child helps to make. Shay tells the children that they will get a sticker on their chart EACH TIME they successfully use the bathroom. Whenever a child gets ten stickers, the child receives a small prize. What technique is Shay using?

Token economy

Explanation:

Token economy is defined as system in which tokens are used as reinforcers for systematic reinforcement of expected behavior.In this system, good behavior is rewarded with tokens or symbols that is exchanged with other desired reinforcers.

According to the question, Shay is using token economy by rewarding children with stickers whenever they perform bathroom habit correctly and then if any student receives tens sticker, he/she will be rewarded with a prize as exchange of desired token.

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."