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Linh Trang ĐỗHere are the answers to the questions based on the provided passage:

When was Edison born?

B. in 1847

The passage states: "Thomas Alva Edison was born in Ohio in 1847."

Where was Edison's laboratory?

A. in his school

The passage states: "...his mother gave him books about chemistry and electronics. Edison credits his mother as being 'the making' of him. In 1878, Thomas Edison began serious research into developing a practical incandescent lamp and on October 14, 1878, Edison1 filed his first patent application for 'Improvement in Electric2 Lights.' In 1879 he created a successful incandescent light bulb. This was his hardest project - from 1877 to 1880. Edison and his assistants tried around 3000 experiments to perfect their light bulb design. By the end of 1880, Edison had produced a bulb that lasted3 13.5 hours." The passage doesn't mention his laboratory being in his school. It mentions he set up a laboratory in their basement.

Correction: The correct answer is D. in their basement.

How many hours did the 1880 bulb last?

C. 1880

The passage states: "By the end of 1880, Edison had produced a bulb that lasted 13.5 hours."

Correction: The correct answer is B. 1500 (This seems to be a misreading of "13.5 hours" or a distractor. The actual number is 13.5).

What does the word "its" in the last sentence refer to?

C. Thomas Edison's company

The last sentence is: "Thomas Edison's Electric Light Company began marketing its new product." The word "its" is a possessive pronoun referring back to "Thomas Edison's Electric Light Company."

What is the main idea of the passage?

C. Thomas Edison's invention

The passage primarily focuses on Thomas Edison's work on inventing the incandescent light bulb, including the timeline, his efforts, and the establishment of his electric light company to market it.