Concept:An advancing shoreline is built by depositional processes, while an erosional landform indicates a retreating shoreline.
Explanation:A spit is a ridge of sand deposited along a coast, showing sediment build-up.
A beach is formed by waves and currents depositing sand, adding material to the coast.
A tombolo is a sandbar that connects an island to the mainland, also created by deposition.
These three landforms are all depositional and therefore belong to an advancing shoreline.
On the other hand, a stack is a tall column of rock left behind after wave erosion destroys a headland.
Since a stack is caused by erosion, it is linked to a retreating shoreline, not an advancing one.
Hence, the landform not associated with an advancing shoreline is the stack.
Answer:B. stack