Final answer:
The development of satellites in the 1970s enabled premium channels like HBO to be born, transforming the broadcasting industry by broadening entertainment options and stimulating competition in the telecommunications sector through deregulation.
Step-by-step explanation:
The development of satellites in the 1970s enabled premium channels like HBO to be born (C). During this dynamic period of technological growth, satellites revolutionized the broadcasting industry, fostering new forms of entertainment and media distribution. The 1970s saw deregulation in telecommunications, allowing for greater competition and growth of new services. Thus, the advent of satellite technology not only stimulated the creation of specialized channels but also disrupted the traditional broadcast model by offering a wider array of choices to consumers.