31. A teacher first models how to complete a task and then guides students through the task step by step. Later, the teacher gradually reduces support as students become more confident. What is the teacher mainly doing?
(A) Increasing student motivation.
(B) Encouraging independent learning.
(C) Providing detailed feedback after task completion.
(D) Applying scaffolding.
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統計: A(0), B(1), C(0), D(20), E(0) #3895142
統計: A(0), B(1), C(0), D(20), E(0) #3895142