Ricord Books, a publication house, faced huge losses after 2008. The majority of its readers were born during the late 1950s, whose population was rapidly declining. Most modern readers preferred using e-books rather than reading from hard copies. This resulted in a decrease in the sales of Ricord Books. Identify the dimension of the social environment that this scenario exemplifies.
A. Ethical policy
B. Social responsibility
C. Diverse workforce
D. Aging population