D is the only correct statement.
Answer:
Scaffolding.
Explanation:
Scaffolding is a process used by teachers as a tool to assist their students. In this process, the teachers first assist their students when they learn, the teachers back out, and assist when they need help.
In the given case, Francesca's teacher is using the scaffolding technique. The teacher helps her student solve the algebra problems. She backed up when they begin to solve the problems.
Therefore, scaffolding is the correct answer.
