Question

atoms of which three elements could bond together to form an organic compound?
carbon, calcium, and nitrogen
oxygen, calcium, and carbon
oxygen, hydrogen, and calcium
carbon, hydrogen, and oxygen

Explanation:

Organic compounds are primarily composed of carbon - hydrogen bonds, and often also contain oxygen. Carbon is the key element for organic chemistry due to its ability to form a wide variety of stable covalent bonds. Hydrogen commonly bonds with carbon, and oxygen is also frequently present in functional groups of organic compounds like alcohols, aldehydes, etc. Calcium is not a typical element in organic compounds.

Answer:

D. carbon, hydrogen, and oxygen