Answer:
"When they heard the commotion across the room, the audience gravitated toward the noise to see what the fuss was about."
"Maria knew the child was frightened, so she tried to gently remove the bandage from the panicked young toddler's finger."
"It was a sunny, clear day. There was scarcely no breeze, so naturally, we decided to drive to the beach."
"The meal was served in six courses, each more complex and colorful than the last. And delicious too."
Explanation:
When something is said to have contested usage, it means that there are still disagreements among scholars about it.
From the options given, some scholars disagree about the usage of a split infinitive which uses "to gently remove" in the first option.
From the second option, a sentence begins with a coordinating conjunction which is considered wrong by some scholars of grammar.
The third option contains a double negative which is also has contested usage.