Answer:
All of them are written correctly and exemplify an incident of contested usage.
Explanation:
Contested usage is the part of English Language where different academics come to the conflict in terms of correctness talking about grammar and uses creating different alternatives of use depending on the situation and beliefs of people.
These sentences show examples of very common contested usage as ending a sentence with a preposition, using a split infinitive, using a double negative, and starting a sentence with a coordinating conjunction.
"When they heard the commotion across the room, the audience gravitated toward the noise to see what the fuss was about."
The sentence ends with a preposition.
"Maria knew the child was frightened, so she tried to gently remove the bandage from the panicked young toddler's finger."
The sentence uses a split infinitive.
"It was a sunny, clear day. There was scarcely no breeze, so naturally, we decided to drive to the beach."
A sentence contains a double negative.
"The meal was served in six courses, each more complex and colorful than the last. And delicious too."
A sentence begins with a coordinating conjunction.