A sudden, dramatic, and important discovery or development
What I interpret "cut the cord" to mean is to become independent of something. Therefor I think the anwers are C) Stop depending on his parents E) Leave the farm.
The first one: c. He gave his own goats just sufficient food to keep them alive, but fed the strangers more abundantly in the hope of enticing them to stay with him and of making them his own.
The second one: d. “As he had a compassionate heart he pulled out his needle and thread, and sewed her together.” and e. “…but as the tailor used black thread, all beans since then have a black seam.”
The era of the Soviet Union