Discussion

Explanation:

Option 1 is incorrect. The passage does not state that electric cars will be equipped with mechanisms that prevent collisions. Eliminate option 1. Option 2 is incorrect. The final paragraph states that unless the private cars are used as public transport, traffic jams will exist. Thus the example of Uber is not given to show that traffic jams will not exist. Eliminate option 2.
Option 3 is correct. The example of Uber is given in the last paragraph to show the possibility of using private cars as public transport. Retain option 3.
Option 4 is incorrect. The passage makes no such mention. Eliminate option 4.
Hence, the correct answer is option 3.

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