The word "feat"(Line 4, Para.3)is closest in meaning to ______.

A．call on the people to go on street for a better proposal
B．let the public catch onto more new ideas
C．show that we can do something for the environment
D．arouse our anger for the destruction of nature

A．some instances of green construction projects
B．some famous green movement leaders
C．some idealists in the field of environment preservation
D．some specific needs of customers in their projects