Question

read the text. then answer the question.
ocean sediment was deposited below a coral reef. the sediment was made mostly of the bodies of marine organisms, such as clams.
over thousands of years, the sea level fell. the area with the coral reef became part of a beach. sand was deposited by waves on top of the older sediment.
which rock sequence is more likely to form from the sediment layers described above?
image of two rock layer diagrams: top diagram has sandstone (younger) over limestone (older); bottom diagram has sandstone (younger) over shale (older)

Explanation:

Step1: Identify older sediment type

The older sediment is from marine organisms (clams), which forms limestone.

Step2: Identify younger sediment type

The younger sediment is sand, which forms sandstone.

Step3: Match sequence to layers

Older layer (limestone) below younger layer (sandstone) matches the first sequence.

Answer:

The first rock sequence (limestone below sandstone)