If a Memory Is Like a City You Want to Travel

If a memory is like a city you want to travel to,and the retrieval paths you use to find the memory are like highways that lead to that city,which is the best strategy for memorizing?

A) avoid building too many highways,because it's expensive (i.e. ,demands too many resources) to build highways
B) build numerous highways that reach the city from many directions,so you have multiple ways to remember the answer later
C) build toll roads (premium highways) so you can get to the memories as fast as possible with minimal traffic
D) invest very little in building highways because you never know which highway will be the best road in the future