In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Elephants regularly swarm to the landfill (1) ______ near a wildlife sanctuary in Sri Lanka. (2) ______ with food scraps, they consume plastic, (3) ______ slowly kills them, officials say. Images (4) ______ the elephants foraging through the waste (5) ______ environmentalists. Plastic from landfill sites is a known killer of wild elephants, which are estimated to number about 7,500 in Sri Lanka.