B. Families.i had this same question in my class :] hope it helps!
Idk but i could use some points so help a brother out!
Answer:
C. Principle of original horizontality
Explanation:
The Law of Original Horizontality suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed. This allows us to infer that something must have happened to the rocks to make them tilted.
I believe it was Locke... I could be wrong though