30 points! and you! btw this is a science question, but i couldn't find a science category ; )

what does it mean to have a well-defined question to study?
a. the question can be answered yes or no.
b. the question can be tested in one experiment.
c. the question is about how a scientific term should be defined.
d. the question is something that everyone is really interested in.

Look at the map of cities in the united states at the turn of the twentish century what impact did railroads have on cities across the united states at the turn of the twentish century

Multiple-choice the word "democracy" means: (a) "rule by the people" (b) "minority rule" (c) "individual rights" in a democracy, election results are protected against dishonesty by: (a) laws (b) customs (c) values the type of government in which the people are represented by elected officials is sometimes called a: (a) monarchy (b) republic (c) totalitarian state in most democracies, the only legal requirements for voting or holding public office are based on age, residence, and: (a) religion (b) citizenship (c) personal wealth in an election, political parties give voters a choice among candidates who tend to represent different: (a) ethnic groups (b) religious groups (c) interests and points of view

Stories that are passed down through generations by word of mouth are called