Yvonne is putting a puzzle together with her father. at first, he points to specific pieces and says, "this piece might fit here"or "can you try to put this piece here? " as yvonne improves in finding where the puzzle pieces belong, her father offers less advice and instruction, allowing his young child to take more responsibility for completing the puzzle. this is an example of:
a. concrete operational instruction.
b. preoperational thinking.
c. scaffolding.
d. a bidirectional experience.

c. Scaffolding

Explanation:

According to Vygotsky's theory, scaffolding consists of the activities provided by the adult or more competent peer, to support the child to solve a task or achieve a goal that would be beyond his/her reach without the help of this adult or peer.

Therefore, thanks to scaffolding, the child can focuses on the parts of the task that he/she knows how to do while getting help from the adult or peer and as time goes by and keeps improving, the help is removed and the child can complete the task by his/her own.

In this example, Yvonne is putting a puzzle together with her father. At first he helps her suggesting where some pieces might go but as she improves, he offers less advice and instruction and Yvonne has more responsibility on completing the puzzle. We can see that her father is providing help so she can complete the task but as she improves, this help is removed and she can complete the task by herself. Therefore this is an example of scaffolding.

what is the tax base for the sales tax?

it should be (usually ) 6%