Which of the following is NOT a section found in all textbooks?

A) subheading

B) literary terms

B. literary terms

Explanation:

because a subheading is: a heading given to a subsection of a piece of writing.

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B) literary terms

Explanation:

Literary terms can refer to playful techniques employed by comedians to make us laugh or witty tricks wordsmiths use to coin new words or phrases.

these are not compulsorily found in all textbooks. so, this is the answer!