Laminated glass is much harder to break than the glass typically used in the windows of cars driven in Relnia. It is more difficult for thieves to break into cars with laminated glass windows than into cars with ordinary glass windows, and laminated glass windows are less likely to break in a collision. Nevertheless, considerations of security and safety do not unambiguously support a proposal to require that in Relnia all glass installed in cars be laminated glass, since __________.


A. most people cannot visually distinguish laminated glass from the glass typically used for car windows


B. a significant proportion of cars driven in Relnia are manufactured elsewhere


C. some cars in Relnia already have laminated glass in their windows


D. the rates of car theft and of collisions have both fallen slightly in Relnia in recent years


E. there are times when breaking a car's window is the best way to provide timely help for people trapped inside


Let’s look at the argument-

Laminated glass is much harder to break than the glass typically used in the windows of cars driven in Relnia

 It is more difficult for thieves to break into cars with laminated glass windows than into cars with ordinary glass windows, and laminated glass windows are less likely to break in a collision


However

considerations of security and safety do not unambiguously support a proposal to require that in Relnia all glass installed in cars be laminated glass, since __________.


We need to find an option that logically completes the argument. 

Let’s look for an option that  tells us why  in spite of all the reasons stated above, considerations of security and safety do not support a proposal to require that in Relnia all glass installed in cars be laminated glass.


A. most people cannot visually distinguish laminated glass from the glass typically used for car windows

Does not matter. Why is the proposal to install laminated glass not supported? A doesn’t tell us that. Eliminate.


B. a significant proportion of cars driven in Relnia are manufactured elsewhere

It does not matter where the cars are manufactured. Same as A.  Eliminate. 


C. Some cars in Relnia already have laminated glass in their windows.

Again, does not tell us why laminated glass should not be used. 


D. the rates of car theft and of collisions have both fallen slightly in Relnia in recent years.

Does not support why laminated glass should not be used. Eliminate.

E. there are times when breaking a car's window is the best way to provide timely help for people trapped inside


E gives us the reason why laminated glass should not be used for cars, irrespective of all the advantages stated. 

Laminated glass is harder to break. Therefore laminated glass 

Is not suitable at times when breaking a car's window is the best way to provide timely help for people trapped inside. Correct.