Answer:
Ergonomic
Esther has been lifting tools all day, so most likely the repetitive movements or improper lifting caused her pain.
Loud noise can damage cells and membranes in the cochlea. Listening to loud noise for a long time can overwork hair cells in the ear, which can cause these cells to die. The hearing loss progresses as long as the exposure continues. Harmful effects might continue even after noise exposure has stopped.
D. provision of emergency services to injured victims at the accident scene.