Name the person whose house became the centre of preaching of Islam?

A. Hazrat Abu Bakr (RA)
B. Hazrat Usman (RA)
C. Hazrat Arqam (RA)
D. Hazrat Talha RA)

The correct answer to the question: "Name the person whose house became the centre of preaching of Islam?" is "Hazrat Arqam (RA)".