When elements are placed on the page so that text and graphic elements are evenly distributed you have: balance.
<span>Financial transactions were one of the first purposes of computers. This is where "ticker tapes" came from; early computers were used to keep track of how stocks were performing. Computers in early days used large mainframe systems and punch cards to keep track of this type of data.</span>
D(in a .c file ) because that is where it should be placed :)
The answer to this blanks are black and visible