Question

multiple - choice question
what trait allowed some crickets on the island of kuai to survive while their pals were obliterated (wiped out)?
they had the ability to \sing\ louder thanks to the structure of their wings
they were better at finding food
they were not able to \sing\ because their wings lacked ridges
rewatch

Explanation:

In some cricket - populations, silent wings (lacking ridges for singing) can be a survival - trait as it reduces predation risk.

Answer:

they were not able to "sing" because their wings lacked ridges