The manufacturing of an electric vehicle causes much more pollution than the manufacture of traditional vehicles. However, this increased pollution is set off in a few years of operating electric vehicles since they have zero emissions in the operational phase. Over the lifecycle of the vehicle, considerable environmental benefits accrue. Electric vehicles will replace traditional petrol and diesel vehicles in the future.

Which statement is the first main conclusion of the argument?

A tiler has used 4 identical tiles to make a pattern on the floor. A carpet is laid on the tile covering part of the pattern as shown below.

which of the following is the pattern which has been covered?