Which of the sentences show the narrator is conscientious about the
environment?
A. "One said someone might call the cops, but he doubted that
anyone would shoot at me."
B. "As I rode my bike north out of Fort Collins, Colo., the houses
thinned out, replaced by cows and horses."
C. "I'd made my way to the kitchen, turned on the light, poured myself
a cup of coffee and sat down at the computer."
D. "So I switched my light bulbs to fluorescent, signed up to pay a
penny a kwh more to get renewable energy, bought a TerraPass,
and started paying more attention, knowing that it wasn't enough."