What has been the effect of mass literacy and the availability of inexpensive printing techniques on sexually explicit material?

A) a dramatic fall in the incidence of child pornography
B) a gradual reduction in the pornographic content of mass-produced books and drawings
C) a dramatic increase in demand for sexually explicit material
D) a gradual increase in the number of laws directed at lesbian women and gay men that prohibit them from accessing sexually explicit material

Mass literacy and the availability of inexpensive printing techniques have greatly increased the demand for sexually explicit material, leading to the growth of the pornography industry. This has been facilitated by the ease of production and distribution of pornographic material through various media, including books, magazines, videos, and the internet. While there have been efforts to regulate or restrict access to sexually explicit material, the industry continues to thrive due to its profitability and the availability of new technologies that make it easier to produce and distribute pornographic content.