Answer: ¡Qué buena idea!
—Me gustaría ir al partido de fútbol.
—¡Qué buena idea! Voy contigo.
—I would like to go to the football match.
—What a good idea! I'm going with you.
Explanation: The other choices are common apologies for not doing something. As the answer is yes, the correct option is to praise the idea.