Which of the following best describes an organic compound?

• A. A compound that contains $O_2$ as its only element
• B. A compound that contains only metals and nonmetals without carbon
• C. A compound that contains only ionic bonds
• D. A compound that contains carbon atoms bonded to hydrogen atoms

Answer: (D)

Verified step by step guidance

1. Understand the definition of an organic compound: Organic compounds primarily consist of carbon atoms bonded to other elements, most commonly hydrogen, oxygen, nitrogen, and halogens.
2. Recognize that the presence of carbon atoms bonded to hydrogen atoms is a key characteristic that distinguishes organic compounds from inorganic compounds.
3. Evaluate the given options by checking if they include carbon-hydrogen bonds, which are essential for a compound to be classified as organic.
4. Note that compounds containing only O\_2 (oxygen molecules), or only metals and nonmetals without carbon, or compounds with only ionic bonds, do not meet the criteria for organic compounds.
5. Conclude that the best description of an organic compound is one that contains carbon atoms bonded to hydrogen atoms, as this reflects the fundamental nature of organic chemistry.