Since there's not a single section to put this that fits....
Question :
The more miles you drive a vehicle, the smaller the ______________________ costs are per mile.

environmental
operating
fixed
collision

... and this question.
Question :
In order to drive, you need to understand the basic _____________________ about a vehicle.
cost-benefit ratio
optional equipment packages
rules
facts

Question

Since there's not a single section to put this that fits....
Question :	
The more miles you drive a vehicle, the smaller the ______________________ costs are per mile.

 	         environmental
 		 operating
 		 fixed
 		 collision


... and this question.
Question : 
In order to drive, you need to understand the basic _____________________ about a vehicle. 
 		 cost-benefit ratio 
 		 optional equipment packages 
 		 rules 
 		 facts

anonymous · Answer

My only questions!

anonymous · Answer

Is this drivers ed?

anonymous · Answer

Yeah, the book I have doesn't specify on this.

anonymous · Answer

Well, it does, but it contradicts itself a lot.
Which is why I need someone else's opinion in this

anonymous · Answer

Okay. The more miles you drive a vehicle, the smaller the operating costs are per mile. 

In order to drive you need to know the basic facts about a vehicle.