D) Being a teacher means having many benefits: personal job fulfillment, a strong union, supportive friends and colleagues, and many holidays and breaks off during the school year.
Explanation:
Only, Being a teacher means having many benefits: personal job fulfillment, a strong union, supportive friends and colleagues, and many holidays and breaks off during the school year, encompasses all the author’s opinions of the positives of teaching.
Because of being a teacher means having many benefits: personal job fulfillment, a strong union, supportive friends and colleagues, and many holidays and breaks off during the school year.