A．The development of online videos.
B．The limitation of new laws.
C．The lower qualities of DVD itself.
D．The use of handheld video cameras.

A．By sending fewer discs to the voters.
B．By resorting to the laws and regulations.
C．By using stronger anti-piracy technology.
D．By sending their discs via mail.

A．Because the information is too much and is displayed messily.
B．Because the information appears to be long and boring.
C．Because the information is too difficult to be remembered.
D．Because the clarity of the information dulls the function of the brain.