You guys can use answer choices like A. B. C. or D.

Thank you :)

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.

Iwould say a, due to the fact these routes display many things that would be useful and provide explanations for how states are known.

This answer would be c