300
Details:
Horses transported people and goods.
Horses, mules and oxen plowed fields.
Horses pulled milk and bread wagons.
Which main idea is supported by the set of details above?
a. Before the days of automobiles, horses and mules did not need horseshoes.
b. Before the days of automobiles, horses and mules had many jobs.
c. People would not have survived without horses.
d. People would have had to work much harder without horses.
b. Before the days of automobiles, horses and mules had many jobs.