The article says:
Mantis shrimp have super-powered eyes. They can see light and colors that other creatures can't. This allows them to share secret signals. They might flash an invitation to a possible mate. Or they might flash a warning to another mantis shrimp that tries to get in the way.
The author uses this passage mostly to __________.
show how mantis shrimp hide from other creatures
explain how mantis shrimp cannot see light
show how mantis shrimp use their eyes to "talk"
explain how mantis shrimp can hear signals