The Law of Moses (halakha) is the law written in the Biblical Pentateuch (Torah), and it consists of the 365 prohibitions ("as many as days in a year") and 248 assertions ("as many as bones in the human body"). The various commandments are also known as "mitzvot" (singular "mitzva") The first ten commandments of the Mosaic Law are known as the Decalogue (hence the option '10' in the answers).

The Law of Moses forms the foundation of Judaism and Jewish daily life. It is one of the oldest law systems still followed today. Contrary to usual beliefs, the Law of Moses does not apply to Christians; this is explicitly explained in the Acts of Apostles 15: 1-20. It applies only to Judaism. The Christians are bound to the Seven Laws of Noah - hence the option '7' in the answers.

More Info: en.wikipedia.org