Question

in what form carbon is released into the ocean? dissolved carbon bicarbonate ion carbonic acid sodium ions

Explanation:

Carbon dioxide from the atmosphere dissolves in the ocean and reacts with water to form carbonic acid. This carbonic acid then dissociates into bicarbonate ions and hydrogen ions. The most common form in which carbon is present in the ocean is as bicarbonate ion. Dissolved carbon is a general term and not the most specific form. Carbonic acid is an intermediate in the process. Sodium ions have nothing to do with the form of carbon release into the ocean.

Answer:

B. Bicarbonate ion