Answer: The correct answer is- D) Quaternary.
Food chain represents the transfer of energy and matter among different organisms in an ecosystem. It starts from producers ( like green plants and algae) and it is followed by different levels of consumers ( such as primary consumer, secondary, tertiary, and quaternary consumers).
As per the law of 10% energy transfer, only 10 % of the energy is passed from one trophic level to the next whereas the rest 90% of the energy is utilized in various metabolic processes and released as heat in the atmosphere.
Among the different trophic levels ( position of organism in food chain), quternary level of consumers lie at the last position and thus they receive smallest supply of energy.
