What detail? I don’t see one.
Subordinate means someone who is of lower rank in a job. So the manager spoke to someone in a lower rank than him in a cordial tone.
Answer:
Compound sentence
Explanation:
A compound sentence is a type of sentence that contains an independent clause joined by a comma, or semicolon.
Therefore, from the given sentence, "Whenever the clock struck midnight, Cinderella lost her slipper", we can see that the sentence has an independent clause which is "Cinderella lost her slipper" which is joined to another clause with a comma.