Answer :
Final answer:
Coquina, which is composed of loosely-cemented shells and shell fragments, indicates the highest energy carbonate environment among the options given. The option (C) is correct.
Explanation:
Coquina consists of loosely-cemented shells and shell fragments, typically forming in environments with strong wave and current action which is an indicator of high energy conditions. In contrast, chalk is made up of microscopic remains of coccolithophores and indicates a lower energy deep marine environment.
Micrite, or microscopic calcite mud, also forms in calmer conditions than coquina. Fossiliferous limestone contains visible fossils and can form under a range of energy conditions, but is usually not indicative of the highest energy environments compared to coquina. Therefore, option (C) is correct.
