Question

multiple - choice question
how many species of frogs have gone extinct world wide?
at least forty species of frogs have gone extinct.
five species of frogs have gone extinct.
frog species are not in trouble.
at least twenty species of frogs have gone extinct.

Explanation:

Based on general knowledge about amphibian conservation status, it is known that a significant number of frog species have gone extinct. The statement "At least forty species of frogs have gone extinct" is consistent with scientific reports on amphibian extinctions.

Answer:

At least forty species of frogs have gone extinct.