Answer: B) I myself would never quit the team in the middle of a season.
Explanation: Intensive pronouns are used to add emphasis to the subject, they are usually placed right after the noun or pronoun it's modifying. Some intensive pronouns are myself, yourself, himself, herself, itself, ourselves, yourselves, themselves. From the given sentences, the one that contains an example of an intensive pronoun is option B, because adding "myself" after the subject "I" only helps to emphasize the subject.