Answer: Part A: The author’s purpose in the paragraph is to create a strong conclusion by restating the benefits of smartphone microscopes. In the paragraph, the author talks about the benefits of building a smartphone microscope, such as keeping the money that would have been spent on buying a microscope in the bank, learning interesting facts about lasers and lenses, and creating a microscope that works great and allows the author to continue learning about the world. By stating that this is a "major success," the author is restating the benefits and creating a strong conclusion to the paragraph.
Part B: The evidence from the paragraph that best supports the answer to Part A is: “And, most important, I created a microscope that works great and has allowed me to continue to learn about the world around me.” This sentence specifically talks about the benefits of creating a microscope that works well and allows the author to continue learning, which supports the idea that the author is restating the benefits of smartphone microscopes.
Step-by-step explanation: