It can be inferred from the passage that, before the Industrial Revolution, most women worked in ______.

A．lack of natural enemies
B．great care of wildlife preservationists
C．favorable conditions in their winter habitat
D．changes in their migration patterns

A．humans are responsible for the problem
B．hunting limits and regulations should be lifted
C．birds have a strong capability to survive
D．the Canada geese are a better species than the snow geese