It is definitely not true that many small rural communities have best transport, so we can reject the option b) and d) together with it.
The best answer is that they don't have mass transit systems (a is the correct answer). It's not true that they can walk everywhere because they can for example be forced to walk to a different town if they need a hospital.
The answer is Core.
Core beliefs are assumptions about ourselves, others, and the world. They are beliefs that are learned from our environment. We all have core beliefs and everyone's is different as they represent how and where have been raised and who or what we have been exposed to. Core beliefs are instilled in us and are very hard to change. They are assumptions we make about life and determine how we act as well as how happy or depressed we are.
The answer is true. i’m 50% sure