Answer:
Everyone generated either one or three associated words to each to be remembered the word.
Explanation:
Long term memory retrieval process is a process that takes place differently. Many things are there that affect the retrieval process of memory. The memory effects by what you get the information past a long time and what information you are getting in the meantime.
Many other variables are there which affects the process of memory retrieval. There are spacing effects and recency effects that affect the pattern of memory retrieval. But the testing effect increases the memory retrieval.
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.