The correct statement regarding the absence of producers in the food chain is:
Without producers, there would be no food for consumers and decomposers. The food chain would collapse.
Producers, such as plants and phytoplankton, are essential for converting solar energy into chemical energy through photosynthesis. They form the base of the food chain by providing energy and nutrients for consumers (herbivores, carnivores, omnivores) and indirectly support decomposers. Without producers, there would be no primary source of energy for consumers, leading to a breakdown of the entire ecosystem as consumers would have no food source and decomposers would have no organic matter to break down. This would ultimately result in the collapse of food chains and ecosystems.