The characteristics of life in Sparta but not Athens are the stated in options A and C, that is: in Sparta slaves called helots tilled fields and did hard labor; and boys left home at age seven for military training.
A: The Helots were public slaves, owned by the Spartan state, and were an integral part of the rural property of the Spartan citizens, also known as the homoioi. These people were attached to the land, which was the property of the Spartan state, but which was distributed as a cession to the homoioi, who made sure that the helots exploited it.
The greater their number, the more the distrust and cruelty with which the Spartiates treated them increased, to the point that there was a ritual (the Krypteia) organized purposely for the persecution and extermination of the Helots.
C: At the age of seven, Spartan children left their home and were under the authority of a specialized magistrate who supervised education. They were integrated into an agele, a kind of military unit for children, under the command of an older boy, the irén (nineteen years old). They learned then to read and write, as well as to sing. But the essentials of their training consisted in hardening them physically through fighting and athletics, and in learning how to use weapons, to march in formation and, above all, to blindly obey their superiors and always look for the good of the city.