The revelation of the glorious Qur'an started with a

A.

parable

B.

command

C.

Legislation

D.

Declaration

Correct answer is B

"Iqrah" " Read" In a commanding tone by the Angel Jibril.
According to the Muslim belief and Islamic scholarly accounts, the revelation of the Qur'an began in 610 AD when the angel Gabriel (Arabic: جبريل, Jibrīl or جبرائيل, Jabrāʾīl) appeared to Muhammad in the cave Hira near Mecca, reciting to him the first verses of Surah Al-Alaq. Muslims believe that Muhammad continued to have revelations for the rest of life until his death in 632 AD.
"Read! in the name of your Lord who created.
He created man from a clinging substance.
Read: Your Lord is most Generous,-
He who taught by the pen-
Taught man that which he knew not."