Which statement from city contains an opinion?
a."they were still safe and comfortable outdoor areas as originally intended in the master plan."
b."to ensure their hold over [the lands they conquered] roman soldiers built permanent military camps."
c."[roman city planners] decided how much water would be needed and the number and size of streets, sidewalks, and sewers."
d."in the following three hundred years [roman soldiers] created an empire extending from spain to the persian gulf."