I think the answer is B. Because there is a period before the sentence: "The cookies were not eaten by the children" choice B contains the misplaced modifier. Unless that was a typo.
Hope this helps!:)
I didn't understand what you meant by "underlined words" because there aren't any underlined words, but here's the sentence rewritten:
Often, we are invited to the parties.
Extraneous means that something is irrelevant or something that has nothing to do with a particular subject. I hope this helps! :)
Answer:
1: It changes the amount of light that reaches the camera
2: Slow shutter I Believe makes the Picture blurry??
3: Quick shutter i believe Makes Motion blur...I think
Explanation: