According to Some Researchers, Why Are Children of Particular Concern

According to some researchers, why are children of particular concern when it comes to studies of health, the environment, and climate change?

A) Children are still developing and will suffer from long-term exposure to these problems.
B) There is an imbalance between the mortality rate and the fertility rate, where mortality is higher. We could suffer a population crisis if a large population of children dies young.
C) The loss of a child is utterly unbearable, and has wide reaching effects on the whole society.
D) There is no concern. Children are equally susceptible to environmental factors as adults.
E) None of the above