Final answer:
Television was the fastest in penetrating 25 percent of homes in the U.S. market.
Step-by-step explanation:
The rate of technological diffusion refers to how quickly a new technology spreads and is adopted by the general population.
In the context of the question, we are asked which technology was fastest in penetrating 25 percent of homes in the U.S. market.
Television was the fastest in penetrating 25 percent of homes in the U.S. market.
According to the provided information, by 1954, television was already in 55% of American homes, which is more than 25 percent.
It is important to note that this information is specific to the U.S. market.
The other options mentioned in the question - telephone, personal computer, and Internet - may have had different rates of diffusion and penetration, but the provided information does not specify their specific percentages.