The following text discusses a technological development.
3D printing, once limited to industrial applications, is now accessible to hobbyists, small businesses, and even hospitals. Doctors have used 3D printing to create custom prosthetics that fit patients perfectly and cost a fraction of traditional devices. Architects use the technology to quickly produce building models. Artists create intricate sculptures impossible to make by hand. This versatility has made 3D printing one of the most transformative technologies of the past decade.
What main idea does the text convey about 3D printing?
3D printing is too expensive for most applications
3D printing has become widely useful across many fields
Only artists benefit from 3D printing technology
Industrial applications remain the only viable use
Correct Answer: B
Choice B is the correct answer. The text provides examples from medicine (prosthetics), architecture (models), and art (sculptures), emphasizing "versatility" and "transformative" impact.
- Evidence: Multiple fields listed: medicine, architecture, art.
- Reasoning: The word "versatility" summarizes the broad applicability.
- Conclusion: Wide usefulness across fields is the main point.
Choice A is incorrect because the text says hospital prosthetics cost less. Choice C is incorrect because multiple fields are mentioned beyond art. Choice D is incorrect because the text says it was "once limited" to industrial uses.