What is this? Please have an explanation for your answer

C) Breaking down inorganic compounds

Producers are plants, they break inorganic compound such as carbon dioxide, water etc and get their food .some plants lack Chlorophyll hence they are not able to do Photosynthesis and can not make their own food. they are either depend on other green plants or use other mode of nutrition like parasitic .

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.