A public center for clean water distributed pamphlets on efficient consumption and storage of ground ...

A public center for clean water distributed pamphlets on efficient consumption and storage of ground water. Data and statistics regarding this issue were included in the pamphlets by using visual graphics.
 
  What is this kind of representation of information called, and why is it used?
  a. Infographics; because they are detailed and give quick information
 b. Publicity photos; because pictures are worth a thousand words
 c. Media kits; because they provide a variety of information
 d. Fact sheets; because they give a quick summary of the event