6.choose the correct revision of the following fragment: ex: olivia has been saving part of her paycheck every week. to buy a plane ticket to paris. a. olivia has been saving part of her paycheck every week, to buy a plane ticket to paris. b. olivia has been saving part of her paycheck every week; to buy a plane ticket to paris. c. olivia has been saving part of her paycheck every week to buy a plane ticket to paris. d. olivia has been saving part of her paycheck. every week to buy a plane ticket to paris