Which of the following sentence(s) is/are grammatically incorrect?
I. Bats are able to fly in the dark.
II. Bats can fly in the dark.
III. Bats have the ability of flying in the dark, if it does not rain.
IV. Bats cannot fly in the dark if it rains.
V. Bats have the ability for flying in the dark.
Sentence III → “ability of flying” is wrong; it should be “ability to fly.”
Sentence V → “ability for flying” is also wrong; correct is “ability to fly.”
Other sentences are grammatically correct.