Question

Difficulty: HardSentence-Level Transitions

Passage:
For decades, computer scientists believed that solving complex spatial optimization problems required sophisticated digital algorithms. [1] <underline>As a result</underline>, researchers recently demonstrated that the brainless slime mold *Physarum polycephalum* can design efficient network paths that rival human-engineered transit systems.

Question:
Which of the following choices most effectively transitions from the preceding sentence to the sentence that follows?

  1. A
    NO CHANGE
  2. However,Answer
  3. C
    Moreover,
  4. D
    For instance,

Answer

The correct choice is the transition that expresses contrast, which is 'However,'.
The transition 'However' is correct because it logically connects the two sentences by introducing a contrast. The first sentence establishes the expectation that sophisticated computer programming is necessary for optimization, while the second sentence reveals that a brainless organism can perform similar tasks, which contradicts that expectation.

Step-by-Step Solution

1
Analyze the relationship between the two sentences.
The first sentence discusses the belief that sophisticated digital algorithms are needed. The second sentence introduces a brainless organism that can solve the same problems.
Understanding the logic connecting the ideas is necessary to select the correct transition.
2
Identify the type of transition required.
Since the second sentence presents information that contradicts or challenges the belief in the first sentence, a transition expressing contrast is needed.
This narrows down the choices to those that indicate a shift or counter-point.
3
Evaluate the given choices.
'As a result' indicates cause-effect, 'Moreover' indicates addition, and 'For instance' indicates illustration. Only 'However' indicates contrast.
This identifies the single option that establishes the correct logical relationship.

Key Concept

Selecting the logical transition that establishes the correct relationship between sentences.
Estimated Time:1m 15s
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