the top of the food chain and threatening the health of future generations

Humans Are the apex of food chains and the healthy population is made by their interaction.

Explanation:

At the top of the food chain are the meat-eaters as the carnivorous animals and the man and include other wild animals like the polar bears and the orca whales etc.  They are considered to be the apex predator and are responsible for the flow of the food chains and thus form an important component of the ecological systems and future is made and influenced by them. They tend to check the balance of the primary and secondary elements of the food chain.

The correct answer should be brand c.