71. Who is the announcement intended for?
(A) Security guards.
(B) Factory workers.
(C) Office receptionists.
(D) Delivery drivers.

M: Attention all assembly line staff. Before you begin your shift, I have a mandatory update regarding our safety protocols. Starting today, the standard safety goggles are no longer sufficient for those working in the welding section. We have received a shipment of new, heat-resistant face shields that offer better protection against sparks. You must report to the supply room to exchange your old goggles for a new shield before clocking in. Failure to wear the proper gear will result in a formal warning. Thank you for your cooperation in keeping our workplace safe.