question:
Which of the following is a true statement about the map?
answers:
a)The border between North Dakota and South Dakota is a dashed black line; this indicates a state boundary.
b)The border between North Dakota and South Dakota is a thin, blue line; this indicates a national boundary.
c)The border between North Dakota and Montana is a thin, black line; this indicates a national boundary.
d)The border between North Dakota and Montana is a thick, black line; this indicates a state boundary.