The Holy Book of Muslims is the Quran. The Quran is the religious text of Islam and is considered to be the word of God as revealed to the Prophet Muhammad.

Contents of Quran
The Quran contains 114 chapters, each called a surah, with verses (ayat) that provide guidance and instructions for Muslims. The chapters are arranged in order of length, with the longest surahs appearing first and the shortest surahs appearing last.

Importance of Quran
The Quran is considered to be the most important source of guidance for Muslims, providing them with a moral and ethical framework for their lives. Muslims believe that the Quran contains the complete and final revelation of God to humanity, superseding all previous revelations, including those of the Jewish and Christian Scriptures.

Role of Quran
The Quran plays a central role in Muslim worship and practice. Muslims are expected to recite portions of the Quran during their daily prayers, and many Muslims strive to memorize the entire text. The Quran is also used as a source of guidance for personal and communal decision-making, and its teachings are often invoked in discussions of Islamic law and social issues.

In conclusion, the Quran is the holy book of Muslims and is considered to be the word of God as revealed to the Prophet Muhammad. It contains guidance and instructions for Muslims, plays a central role in Muslim worship and practice, and is considered to be the most important source of guidance for Muslims.

(Correct Answer:- D)

The Holy Quran is the Holy Book of Muslims. It lays down the law and the codes for social and moral conduct, and contains a comprehensive religious philosophy.