35) B

The proposal of restoring original boundaries is made to decrease loss in London’s GVA.

The answer is B because if the wider boundaries of the congestion charge zone were restored, the profitable retail areas will suffer due to a decrease in customers.

People will be deterred from going to such retail areas, hence, decreasing the profit made.

Since the aim was to increase London’s GVA, the GVA may actually suffer if people do not come to the profitable retail areas.