Final answer:
Sura Al-Rahman (b) is known for its exquisite beauty and is called 'the bride of the Holy Quran'. It is the 55th chapter of the Quran, celebrated for its themes and rhythmic quality.
Step-by-step explanation:
The Sura that is known for its exquisite beauty and is often called 'the bride of the Holy Quran' is b) Al-Rahman. This chapter, Sura Al-Rahman, is the 55th chapter of the Quran and is notable for its themes of divine beneficence, the wonders of creation, and the concept of balance within the universe. Its verses are admired for the rhythmic quality and the repetition of the verse 'Which, then, of your Lord's blessings do you both deny?', which adds to its aesthetic and spiritual impact.