Read the excerpt from Chapter Four of Windows to the Universe: Revolutions in Astronomy.Even before NASA launched the Hubble Space Telescope in 1990, scientists were already planning for the next generation of space telescopes.Which best explains the purpose of this sentence with regards to the organization of the chapter?
Answer
A
It explains how Hubble led directly to the creation of JWST.
B
It compares Hubble and JWST to highlight their differences.
C
It introduces Hubble as a problem that NASA needed to solve by developing JWST.
D
It establishes a chronological connection between the development of Hubble and JWST.
Explanation
The sentence places planning for the next generation of telescopes before Hubble launched in 1990. This helps organize the chapter by showing the timeline linking Hubble’s development with the later development of JWST. It does not say Hubble caused JWST to be created or describe Hubble as a problem.
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