In case, the new producers are introduced to the food chain, there would be an increase in the number of producers. The increase in the number of food, would increase the availability of the food in the food chain. due to the abundance of the food, there would be favourable conditions for the herbivores, which will cause increase in their number.
Hence, the correct answer is option (b).
The increase in the number of the herbivore cause the further increase in the number of the omnivores and the carnivores. As the number of individuals in a population increase, the number of death would also be more, which will result in the increase in the number of decomposers. Hence, the option (a), (c), and (d) are incorrect.
