I can give you five summary’s but I will be honest I’m in 8th grade and we have not done whatever this is and I’m in advanced.
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.
