it depends on the subject
Answer:
Subject Matter Knowledge extends beyond knowing a lot about something. It suggests that both educators and students think in a disciplined manner that they can apply to a multitude of places and situations. It also suggests that going deep into content yields richer learning.
Explanation:
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Gay and merry have similar denotation and dissimilar connotation.
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Ancient
Professor Singh is a specialist in Ancient Chinese History.
C) topic
Usually you do not repeat the title in the paragraph it is normally the topic. When you repeat the topic it is when you need to remind the reader what you are talking about or how something relates to what is happening.