The concept of the "social construction of reality" was coined and greatly explored by:

The correct answer is Peter Berger and Thomas Luckman. 

Peter Berger and Thomas Luckman are authors of the book The Social Construction of Reality, which was published in 1966. According to Berger and Luckman, the 'social construct of reality' refers to the theory that everyday life phenomena (such as education, marriage, religion, media, etc.) are not naturally occurring phenomena or institutions, instead they are formed and function according social forces and consensus amongst members of society (socially constructed).