The writer wants to replace the underlined word in sentence 10 (reproduced below) with a term that is consistent with the information provided in the sentence and maintains the style and tone of the passage. The territorial wrasses at first reacted aggressively when presented with a mirror in their tank, but over time they developed erratic behavior: dancing and bobbing in front of the mirror, sometimes upside down.

Which of the following choices best accomplishes this goal?

wacky
A

unusual
B

far-out
C

messed-up
D

offbeat