Question

The fact that sedimentary layers are initially laid down flat (or nearly flat) is called the _____.

A. law of correlation
B. principle of uniformity
C. law of original continuity
D. law of original horizontality

Answer 1

The answer is D. Hope this helps! Stay safe out there!

Answer 2

Just from the name we can guess that
D. law of original horizontality

is a good candidate - but do the scientists actually call it like that? in fact, they do!
This law has to do with the fact that gravity would attract the sediment at the same rate. This means that if we see sediment layers in other position than horizontal, this is caused by movements!