Brittany helps her 2-year-old daughter make hot chocolate. Brittany assists her daughter as they measure teaspoons of cocoa into a cup, add water, stir the contents, and then microwave the cup. Brittany is demonstrating Vygotsky's concept of:

Scaffolding

Explanation:

Scaffolding  is the teaching method in which teacher ,parent or any advanced person can guide student to learn activities and tasks. Teaching and guidance of teacher helps a child to grasp more knowledge and usage independently.

According to the question, Brittany is displaying scaffolding through teaching her daughter how to make hot chocolate with guidance.She is providing assistance and support to daughter so that she can learn better .

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

the answer is d.index