Once we know the age of a fossil, we can assume

A. older fossils will be found below younger fossils.
B. the rock layers below the fossil are older, and the rock layers above the fossil are younger than the fossil itself.
C. the rock layers below the fossil are younger, and the rock layers above the fossil are older than the fossil itself.
D.there is no real correlation between the age of the rock and the age of the fossil.

b.the rock layers below the fossil are older, and the rock layers above the fossil are younger than the fossil itself.

Because The fossils present in a rock exposure or in a core hole can be used to determine the ages of rocks very precisely.

You might assume B is correct but it could also be correct that rock layers or strata were laid down at nearly the same time and fossils were sorted by liquefaction and hydrological sorting. Fossils have been found in strata that are out of place according to evolutionary timelines and some fossils have also been found with preserved, intact tissues in them which shows they could not be millions of years old. Most strata also does not show signs of weathering between layers or meteor impacts which should be evident if they are as old as thought. That refutes the idea that rock layers and strata were laid down over millions of years of time....it is consistent with a global Flood theory that strata were laid down in a relatively short period and that fossils were hydrologically sorted by size and liquefaction, etc....not by when they supposedly lived.

Fresh tissues in fossils...
http://www.icr.org/fresh-fossils/

Out of place fossils...
http://www.nwcreation.net/anomalies.html

How fossils are sorted by liquefaction and other forces....
http://www.creationscience.com/onlineboo…

(B)

b

To the world its B
But to truth its D

Remember you got to lie to make it in this world!