The Correct answer is Option 2. Explanation & Key Takeaways: • The passage clearly divides carbon compounds into two broad categories: organic compounds and inorganic compounds. • Organic compounds mainly contain carbon and hydrogen and are usually associated with living organisms. Examples given in the passage include hydrocarbons, alcohols, acids, plastics, proteins, carbohydrates, DNA, and RNA. • On the other hand, inorganic carbon compounds do not fit into this carbon–hydrogen framework. The passage explicitly mentions carbon dioxide (CO₂), carbon monoxide (CO), carbonates, and bicarbonates as examples of inorganic compounds. These substances play an important role in geological and environmental processes, such as the carbon cycle, rather than in biological structures. • Since carbon dioxide and carbonates are specifically listed under inorganic compounds in the passage, they are correctly classified as inorganic compounds.