Covalent bonds is the correct answer
The organism is a plant.
Plants are photosynthetic and autotrophic organisms, characterized by plant cells containing chlorophyll. The plants do not have locomation devices and are therefore immobile.
Photyosynthesis starts from inorganic ingredients (CO2 and H2O) to give an organic molecule (glucose) and oxygen at the end.
The characteristic it shows is Growth
D. PRimary producers
Autotroph means that they make their own food. D is the only one that produces their own food