Final answer:
A basic teaching of Judaism is monotheistic worship of Yahweh and adherence to the laws and ethical guidelines set forth in the Torah, emphasizing moral action in the world.
Therefore, the correct answer is: option "There are many gods, but they only need to worship one of them."
Step-by-step explanation:
Judaism is an Abrahamic monotheistic ethnic religion. It comprises the collective spiritual, cultural, and legal traditions of the Jewish people, having originated as an organized religion in the Middle East during the Bronze Age.
A basic teaching of Judaism is the concept of monotheism, the worship of one God. This God, known as Yahweh, was believed to have made a special covenant with the Jewish people.
The sacred text of the Jewish faith is the Torah, which includes the Ten Commandments and sets forth various laws and rules governing moral behavior, religious practices, and daily life.
Judaism emphasizes action in this world and prescribes a set of dietary laws as well as social and ethical guidelines. One of the central tenets is the belief in a single, omnipotent God who created the world and with whom the Jews maintain a unique covenant.