Answer:
A. Judaism developed through the growth of a single nation of people, while Christianity developed through followers spreading the religion throughout the world.
Explanation:
<u>Judaism</u> is the millennial religion of a single nation of people: the Hebrew people. In this sense, Judaism is not a universal religion, it means that, while it is not impossible for non-Jews to convert to Judaism, <u>Jews does not seek to convert other people to Judaism</u> because it is only practiced by those who are born within the Hebrew people.
<u>Christianity</u>, on the other hand, was born as a branch of Judaism in the 1st century AD, and it was born as a universal religion, meaning that <u>Christians of every century tried to spread their beliefs across the world</u>. Christians practitioners in charge of spreading the Christian message to non-Christians are known as missionaries. For this reason, Christianity expanded through almost every continent to the point of becoming the largest religion (or set of religions) in the world today.