Which of the following words is closest in meaning to “Cordial”?

Cordial means warm and hearty.

• Correct answer - hearty: it has the same meaning as Cordial.
• achievable: able to be accomplished - wrong, it does not mean the same as Cordial.
• formal: following strict conventions - wrong, it does not mean the same as Cordial.
• impair: to damage or weaken - wrong, it does not mean the same as Cordial.