Question

This article is primarily about _________.

the method some species of frogs use to clean off their stomachs
how sea cucumbers use their guts as weapons to protect themselves against predators
the pain predators feel when they get trapped by sticky, toxic intestines
how sea cucumbers are studied by scientists who want to learn about regrowing organs

Answer 1

wrong

Answer 2

the method some species of frogs use to clean off their stomachs

Answer 3

My apologies for the error. The correct answer is:

how sea cucumbers are studied by scientists who want to learn about regrowing organs