If a business wants to survive in the changing world, it should be______.

A．She will be glad to.
B．She will not work on it till tonight.
C．She is very unfortunate.
D．She has got another thing to do.

A．When environmental concerns rise.
B．When advertisers are self-regulating themselves.
C．When advertisements become very regulated.
D．When the mainstream also becomes concerned about it.