Final answer:
Pedestrian and cyclist modes of transportation should be prioritized for an environmentally friendly transportation system.
Step-by-step explanation:
According to Pillar 2, an environmentally friendly transportation system, the kind of transformational modes that should be prioritized are:
c) Pedestrian and cyclist
The emphasis on pedestrian and cyclist modes of transportation is because they are the most environmentally friendly. They do not emit any greenhouse gases or pollutants, and they promote healthier lifestyles and reduce traffic congestion.
While electric cars and buses, scooters and motorcycles, and ride-sharing and carpooling can contribute to reducing emissions, they still require energy sources and infrastructure that might not be entirely sustainable.