Identify the correct statement from the following.

O₂ is utilised by the organisms to indirectly break down simple molecules like glucose, amino acids, and fatty acid.

CO₂ which is harmful is also released during cellular respiration which is a catabolic reaction.

Branchial respiration also occurs in some invertebrates (e.g., aquatic arthropods and molluscs) and larvae of amphibians. Pulmonary respiration occurs in amphibians also.

Mechanisms of breathing vary among different groups of animals depending mainly on their habitats and levels of organisation.