God's covenant with Abraham took the form of

God's covenant with Abraham was a promise that He made to Abraham. This promise was made in the form of circumcision, which is what option B in the question is referring to. Circumcision is a religious practice in which the foreskin of the penis is removed. In the case of Abraham, circumcision was a physical sign of the covenant that God made with him.

The covenant that God made with Abraham was significant because it was the beginning of the Israelite nation. God promised Abraham that he would be the father of many nations and that his descendants would be as numerous as the stars in the sky. God also promised to give Abraham and his descendants the land of Canaan as an everlasting possession.

Although the covenant was made with Abraham, it was not just for him alone. The covenant was a promise that God made with all of Abraham's descendants, which includes Christians today. This is because Jesus Christ, who is the savior of all humanity, came from the lineage of Abraham.

In summary, the correct answer to the question is option B, circumcision. This was the physical sign of the covenant that God made with Abraham, which promised him many descendants and the land of Canaan. This covenant was not just for Abraham but for all of his descendants, including Christians today.