Answer:
Option C, It is used for cell functions or transformed to heat energy
Step-by-step explanation:
In an ecosystem, the energy obtained by an organism I by consuming any other organism II is just the 10% of the total energy contained with in organism II. 90% of the energy of the organism is used by the organism itself to carry out various cellular metabolic processed and to provide energy for all other physical processed with in the body. Therefore, when a shark eats a penguin, it only gets 10 joules of energy (which is equal to 10% of total energy contained within the penguin)
Hence, option C is the correct answer.