In the passage, what is the main purpose of the fourth paragraph?
A.
to highlight how people preferred vinyl records to magnetic tapes
B.
to emphasize how continuous improvements in new technology led to the emergence of cassettes
C.
to describe the challenges of recording sounds on magnetic tapes
D.
to reveal the various challenges people faced while developing new technology for recording sounds
C. to describe the challenges of recording sounds on magnetic tapes
To identify the main purpose of the fourth paragraph, we can examine its content. The paragraph discusses the challenges faced while developing new technology for recording sounds, including the difficulties in maintaining sound quality, durability, and susceptibility to external factors. Therefore, the main purpose of the fourth paragraph is to reveal the various challenges people faced while developing new technology for recording sounds. Therefore, the correct answer is D.
To determine the main purpose of the fourth paragraph, we need to analyze the content of the paragraph and identify its key points. This can be done by looking for repeated themes, ideas, or evidence within the paragraph.
To find the answer, let's examine the content of the fourth paragraph. It starts by mentioning the difficulties people faced in developing new technology for recording sounds, such as designing a magnetic tape system. It then discusses the drawbacks of these early attempts, including poor sound quality and fragility. Finally, the paragraph mentions the emergence of the cassette format as a solution to these challenges.
Given this information, we can conclude that the main purpose of the fourth paragraph is to reveal the various challenges people faced while developing new technology for recording sounds. The paragraph discusses the problems encountered with the early attempts at magnetic tape systems and how these challenges led to the emergence of the cassette format.
Therefore, the correct answer is D. to reveal the various challenges people faced while developing new technology for recording sounds.