Which of the following best explains the origins of christianity

The origins of Christianity were formed during jesus's times, by Jesus and his followers, Keep in mind that jesus was born into a place where many and almost all of the people that lived in that time period were Jewish so anything else was very frowned upon and given very little care.

So the Christian bible was based off of many things that the Jewish writings have. In conclusion the Christian Belief has many things in common with Jewish beliefs.