Correct Answer: realistic

Solution : The correct answer is the fourth option.

This means something that is based on reality or is sensible. It's the opposite of absurd in the context of art or ideas, which means something that is extremely unreasonable, illogical, or foolish. So, realistic is the most appropriate antonym in the context of the sentence, as it directly contrasts with the irrational or ridiculous nature of the art mentioned.

The meanings of the other options are as follows:

• Ordinary means something that is common, usual, or average.
• Odd means strange or peculiar. While it's closer in meaning to absurd than ordinary, it doesn't directly mean the opposite.
• Eerie means strange and frightening. It's not the opposite of absurd; it's more related to the feeling of something being unsettling.