Answer:
The sentence that would improve this conclusion is - Organizing safety classes for drivers and cyclists will ensure that everyone knows the rules. The right option is Option B.
Explanation:
While analysing the conclusion of this excerpt, this option seems to be the best. In the end of the passage it is said that sharing the road can be tricky, but there are things that can be done. One option is given which is the organisation of safety classes for drivers and cyclists. If any country or town, opts for this then there would be less chaos on roads and seeing others people following the rules and regulations will bring about road safety and ensure the safety of drivers and cyclists.