Most amphibians breathe with gills as larvae and with lungs as adults.
All frogs are amphibians.
Frogs can breathe with gills as larvae and with lungs as adults.
What can breathe with gills as larvae and with lungs as adults?
(A) humans
(B) viruses
(C) a fish
(D) animals
(E) bats
(F) frogs
(G) bacteria
(H) air