Final answer:
January 1, 1971 was the last time these were advertised on TV is about: B) Cigarettes.
Step-by-step explanation:
The advertisement in question likely refers to the last time cigarettes were advertised on television. On January 1, 1971, the Public Health Cigarette Smoking Act went into effect, which banned cigarette advertisements on TV and radio in the United States. This law came after decades of growing concern about the health impacts of smoking and the influence of smoking advertisements.
Looking at the state of technology and consumer goods during that era, options such as black and white TVs, vinyl records, and rotary phones, while once popular, were not subject to such a widespread advertising ban like cigarettes were. The decision to ban cigarette advertising from television was a health-driven decision made in response to increasing evidence linking smoking to various health issues. The answer is option b.