Correct Answer: refined

Solution : The correct choice is the first option .

Uncouth typically describes someone or something lacking good manners, refinement, or grace. Among the given options, refined is the best antonym, as it implies being elegant, cultured, and having good manners.

The meanings of the other words are:

• Careful means taking care to avoid mistakes or harm and exercising caution and attention.
• Generous means willing to give or share; it is characterised by a readiness to give more than is strictly necessary or expected.
• Coarse means lacking refinement or delicacy; rough in texture, taste, or manners. In the context of behaviour, it may refer to someone lacking sophistication or tact.