Hey there! I'm happy to help!
We can eliminate answer C because the Indus River valley civilization was in India, near the red area.
The Vedic was the religion of the Aryans, who lived in the Indus River Valley civilization, so we can eliminate answer B.
Zoroaster was an Iranian prophet, so you would expect the blue to cover Iran more if it that were the answer, so D is wrong.
Abraham and his descendants established the Jewish civilization in Israel and the surrounding areas, and this is what is what the blue line covers.
Therefore, the answer is A. Abraham and his descendants established the Jewish civilization.
Have a wonderful day! :D
