What Is an Example of an Orienting Reflex

What is an example of an orienting reflex?

A) While standing in line at the cafeteria, you turn around to see who poked you in the back.
B) While watching a movie at the local theater, you reach for another handful of popcorn from your date's bucket of popcorn.
C) While watching a horror movie on TV, you yell at some of the characters, telling them not to open the door.
D) While looking for a book in the library, you get lost and have to refer to a map.