Legislative Districts,or the Districts That Lawmakers Represent,must Contain Equal Numbers

Legislative districts,or the districts that lawmakers represent,must contain equal numbers of people.Districts are redrawn ______,because ______.

A) every 5 years;populations shift relatively quickly across the state
B) every 10 years;the official U.S.Census counts where people live
C) every 20 years;it's time-consuming to redraw the maps
D) never;the process is just too politically contentious