lowering parking fees building larger parking lots decreasing the cost of gasoline lowering the cost of bus and subway fares
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: City administrators can encourage energy conservation by
Possibilities:
- lowering parking fees
- building larger parking lots
- decreasing the cost of gasoline
- lowering the cost of bus and subway fares

lowering the cost of bus and subway fares