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The sentences given below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the numbers as your answer.

  1. It also has four movable auxiliary telescopes 1.8 m in diameter.
  2. Completed in 2006, the Very Large Telescope (VLT) has four reflecting telescopes,8.2 m in diameter that can observe objects 4 billion times weaker than can normally be seen with the naked eye.
  3. This configuration enables one to distinguish an astronaut on the Moon.
  4. When these are combined with the large telescopes, they produce what is called interferometry: a simulation of the power of a mirror 16 m in diameter and the resolution of a telescope of 200 m.

Entered answer:

Solution

βœ… Correct Answer: 2143

From passage: "Completed in 2006, the Very Large Telescope (VLT) has four reflecting telescopes..." and "It also has four movable auxiliary telescopes..."

Step 1: Find the starting sentence -> Sentence 2 introduces VLT completely with name and details -> Must be first

Step 2: Look for connecting words -> Sentence 1 starts with "It also has" -> "It" refers to VLT from sentence 2 -> "also" means additional info -> Goes after 2

Step 3: Follow the logical chain -> Sentence 4 mentions "these" and "large telescopes" -> "these" = auxiliary telescopes from sentence 1 -> "large telescopes" = main VLT from sentence 2 -> Goes after 1

Step 4: Find the conclusion -> Sentence 3 starts with "This configuration" -> Points back to interferometry setup from sentence 4 -> Must be last


Elimination thinking process:

🟒 Sequence 2143 -> Correct flow:

  • Sentence 2: Introduces VLT (perfect opener)
  • Sentence 1: Adds auxiliary telescopes ("It also" connects smoothly)
  • Sentence 4: Explains how they work together ("these" + "large telescopes")
  • Sentence 3: Shows final result ("This configuration" wraps up)

Wrong sequences would break these connections:

  • Starting with 1, 3, or 4 -> No proper introduction
  • Putting 3 before 4 -> "This configuration" has nothing to refer to
  • Separating 2 and 1 -> Breaks the "It also" connection

Answer: 2143

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