A child who is unable to read a picture book independently gets help from an adult to accomplish the task. This assistance will only be effective if the .

I can see no choices.

This assistance will only be effective if the adult uses the child's zone of proximal development as a basis for providing help.

Explanation:

The "zone of proximal development" refers to an area of learning that happens when an adult (such as a teacher) aids a student in learning. The adult is said to have a higher skill set than the person being taught (learner). So, this means that the help of the adult is necessary until the learner learns to do the task alone or without any help from the teacher.

The task difficulty should be gradually increased according to the accomplishment of the learners.

So, this explains the answer.

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Explanation: