Answer:
Tuna
Step-by-step explanation:
Based on trophic levels, applesauce would be the most energy-efficient option to consume, followed by tuna, omelet, and hamburger.
Applesauce is made from fruit, which is produced by plants through photosynthesis, and as such, it occupies a lower trophic level. Tuna, on the other hand, is a carnivorous fish that consumes other fish, occupying a higher trophic level than applesauce. Similarly, hamburger is made from beef, which comes from cows that consume plants, occupying an even higher trophic level. An omelet is made from eggs, which are produced by chickens that consume plants, also occupying a higher trophic level than applesauce.
As we move up the trophic levels, there is a decrease in energy efficiency since each successive level requires more energy to sustain. Therefore, applesauce, which comes from the lowest trophic level, would be the most energy-efficient option to consume, while hamburger, which comes from the highest trophic level, would be the least energy-efficient option.