Read the following paragraph carefully and select the best topic sentence from the four possible answers that follow the paragraph.
Actually, this idea is far from the truth. The Aborigines have been able to survive for centuries in the harsh environment of the desert because their minds are highly trained in the knowledge of food sources. Since they have no means of storing food, their entire attention must be directed toward their daily search for food. From the youngest child to the oldest member of the tribe, food gathering is the top priority. The Aborigines possess a profound understanding of the life around them.
A
In the earliest years, children are taught when foods ripen, where foods are to be found, when animals sleep for months and reproduce, and where water is likely to be found.
B
The Aborigines' in - depth knowledge of the environment around them.
C
The interior of Australia is arid and inhospitable to human beings.
D
Many observers have mistakenly thought that the Aborigines, with so few tools, must have a lower intelligence than other races.
