When the Quantity of Environmental Protection Is Low So That

Multiple Choice

When the quantity of environmental protection is low so that pollution is extensive, then there are usually _______ to reduce pollution and the _______.

A) a few inexpensive and easy ways; average benefit are slightly higher
B) a lot of expensive and innovative methods; marginal benefits are quite high
C) only a few expensive and innovative methods; average benefits are higher
D) a lot of cheap and easy ways; marginal benefits of doing so are quite high