Concept:The correct phrasal verb can be chosen only when the full sentence is known.
Explanation:The sentence containing the blank is not provided in the question.
Each option has a different meaning.
“Turn in” means submit or go to bed.
“Turn on” means switch on or attack.
“Turn out” means appear or extinguish.
“Turn over” means rotate or transfer.
Without the exact context, none of the options can be confirmed as the best fit.
Answer:The answer cannot be determined from the given information. Please provide the complete sentence.