Answer: The idea that is reinforced throughout the selection is that prostheses will be too costly for most people. The selection discusses how advancements in bionics can provide incredible abilities and potentially eliminate disabilities. However, it also emphasizes that these technologies can be prohibitively expensive. For example, it mentions that the high costs of bionic limbs can limit their accessibility to a small number of people. This recurring emphasis on the cost factor suggests that prostheses will be too expensive for the majority of individuals, highlighting the financial barrier associated with accessing these advanced technologies.
Explanation: Hope that this helps! Good luck on the SAT!