The traffic system brings needed order and organization to driving

True. The traffic system brings needed order and organization to driving.

Explanation:

To understand this answer we need to remember the concept and then apply it to our context. The concept of traffic makes references to the flux of vehicles that circulate over a certain urban system. the word traffic is misused by the common person because it is taken as if it meant an accumulation of traffic in a certain area without an efficient circulation. Thus, we have a misconception about it and that is why we associate the word to another meaning. Nevertheless, the traffic system is the planning of a certain urban street net to guarantee communication over a certain settlement.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

the answer is d.index