4. lion: roar :: frog: croak

A. A lion likes to roar and a frog likes to croak.

B. A sound made by a tiger and a frog are so loud.

C. A sound of a lion is described as a roar that is louder than a frog's croak.

D. A sound of a lion can be described as a roar and a sound of a frog can be described as a croak.​