Who collected the Holy Quran in the form of Book?

a) Hazrat Umar (R.A)

b) Hazrat Usman (R.A)

c) Hazrat Ali (R.A)

d) Hazrat Zaid Bin Sabit (R.A) 

Hazrat Zaid Bin Sabit (R.A) collected the Holy Quran in the form of Book. Zaid Bin Sabit was personal scribe of Holy Prophet and chief recorder of Quran.