Which sentence summarizes, rather than evaluates?
a. perhaps another way to think about smith's work is that it is a first glimpse into a field we are only recently beginning to understand.
b. it is far too early to know whether smith's predictions about climate change will be borne out.
c. when people complain about "suffering from global warming" on a hot summer day, smith says, they have little idea what they are saying.
d. smith presents interesting evidence for those who believe that we should be trying to combat climate change now rather than later.