3. What was the basis of the hypothesis? a. What is produced when electricity is allowed to pass through a piece of iron wire? What reaction tungsten wire has compared to the piece of iron wire? c. What would it be Eke when there is no electricity? b. d. Which type of metal glow brighter? 4. Which of the following methods of solving a problem is applied to Edison's case? a. popular method b. trial and error method 5. What personal trait helped Thomas Edison invent the incandescent bulb? c. serendipity d. scientific method a. persistence b. resourcefulness c. patience d. All of these​