Ecause he was both a coach and a stickler for proper usage, mcgritty found he had a new career opportunity. he wrote a book, working long into the night during the off-season, outlining his rules for success on and off the field. which group of words is a parenthetical phrase? a. because he was both a coach and a stickler for proper usage b. he had a new career opportunity c. working long into the night during the off-season d. outlining his rules for success on and off the field