The diagram shows horizontal rock layers. Which statement is accurate?

Layer C is younger than layer A.
Layer D has an older relative age than layer C.
If a geologic event tilted these layers, layer B would no longer be the oldest.
It is possible to determine the absolute age of layer C with the information given.

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Ions gain or lose electrons

What are the choices?

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.