The correct answer would be A. Read the section in the online textbook
Answer: the Alps and the Apennines,
Two mountain ranges, the Alps and the Apennines, helped to protect Rome from invasion. The Apennines divide the Italian peninsula in half and, according to SPQR Online, allowed the Romans to mass forces for counter-attack whenever they were threatened.
The correct answer is individualism
Individualism is very different from selfishness. An individualistic person, is someone "anti social" who likes solitude, and prefers to be alone, read, listen to music, think and so on. That is, it is a personality characteristic.