Yes because it is informal
Psychology of the Child is is NOT a sub-component of Physical Development. As it is used to understand the consciousness of child.
<h3>What is
psychology of child?</h3>
The study of children's unconscious and conscious development is known as child psychology. To comprehend a child's mental development, child psychologists watch how they interact with their parents, themselves, and the outside environment.
Thus, option B is correct.
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I believe the correct answer is: Using technical language
helps the author stress the complexity of the scientific advances and
technological achievements that Edison observed.
In this excerpt from “"Edison Marvels at the Magic of
Electricity" from the New York Tribune (October 19, 1922), author intentionally
incorporate such highly technical language to stress the complexity of the
scientific advances and technological achievements that Edison observed.