Twelve-year-old Nathaniel was facing trouble solving the word problems in his math homework. However, when his dad helped him by reading the problems aloud and emphasizing the important information, Nathaniel could solve all the problems correctly. Which of the following concepts is being illustrated in this scenario?

a. Piaget's concept of conservation
b. Piaget's concept of concrete operational thought
c. Erikson's concept of industry versus inferiority
d. Vygotsky's concept of the zone of proximal development

d. Vygotsky's concept of the zone of proximal development                  

Explanation:

Zone of proximal development: In psychology, the term "zone of proximal development" is also written as ZPD, and it was proposed by a social constructivist and soviet psychologist named Lev Vygotsky.

According to Vygotsky, it is described as the difference between the capability of a learner or a child to perform a particular task with the help of another person or guidance or without the help of anyone i.e, by oneself.

In the question above, the given statement signifies Vygotsky's concept of the zone of proximal development.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )