If a fossil is found above Layer C but below Layer B, what can be inferred about its age?

The correct inference regarding the age of the fossil is that it is dated between 2.1 and 1.2 million years ago because of its position relative to the layers of sediment. In the principles of stratigraphy, the Law of Superposition states that in undisturbed sedimentary rock layers, older layers are found below younger layers.

In this case, since the fossil is located above Layer C and below Layer B, it must be younger than whatever age is assigned to Layer B and older than the age assigned to Layer C. If Layer C is established to be around 2.1 million years old and Layer B is at 1.2 million years, the fossil’s position indicates it falls within this age range. Thus, we can accurately conclude that the fossil is between 2.1 and 1.2 million years old, supported by the geological context based on the depth and relative positions of the layers involved.

The other choices make specific claims about the age of the fossil that do not align with this relative dating technique.