Final answer:
The correct structure for carbon dioxide is a linear structure with two double bonds between carbon and oxygen atoms.
Step-by-step explanation:
The correct structure for carbon dioxide, CO₂, is a. Linear structure with two double bonds between carbon and oxygen atoms. In the structure of CO₂, carbon forms two double bonds with the two oxygen atoms. Each oxygen atom shares two electrons with carbon, resulting in a total of four shared electrons between carbon and oxygen. This gives carbon dioxide a linear molecular geometry.