The sentence use intensive pronouns correctly is option C and D i.e. Before running the marathon, Tom himself ate three plates of pasta and You yourself should try to understand the lesson.
What do you understand by intensive pronouns?
An escalated pronoun adds accentuation to an assertion. While English serious pronouns utilize similar structure as reflexive pronouns.
A concentrated pronoun is not the same as a reflexive pronoun since it capabilities as a word intensifying or adnominal modifier, not as a contention of an action word.
The escalated/reflexive pronouns incorporate myself, yourself, himself, herself, itself, ourselves, yourselves, themselves. Besides, a serious pronoun is characterized as a pronoun that finishes in "self" or "selves" and puts accentuation on its forerunner hence the correct answer is option C and D.
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