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Question

Difficulty: EasyTransitions: Cause and Effect

Which word or phrase most logically completes the passage?

Answer:Graphene is a single layer of carbon atoms arranged in a hexagonal lattice, making it incredibly thin yet exceptionally strong. Because of this unique structure, electrons can move through graphene at extremely high speeds with almost no resistance. 【therefore】, the material has become highly valued by scientists for developing faster and more efficient electronic devices.

Answer

therefore (or another transition showing cause and effect, such as consequently, thus, hence, accordingly, or as a result)
The passage establishes a cause-and-effect relationship: because graphene allows electrons to flow with almost no resistance (cause), it has become highly valued for electronic devices (effect). Therefore, a transition indicating a result or consequence, such as 'therefore', 'consequently', 'thus', 'hence', 'accordingly', or 'as a result', most logically completes the blank.

Step-by-Step Solution

1
Analyze the relationship between the two sentences in the passage.
The first sentence explains that graphene's structure allows electrons to move with almost no resistance. The second sentence states that graphene is highly valued for developing electronic devices.
To determine the appropriate transition, we must identify how the ideas in the passage are connected.
2
Determine the logical connection.
The second sentence describes the effect or result of the characteristic described in the first sentence (since electrons move with no resistance, graphene is highly valued for electronics). The relationship is cause-and-effect.
This relationship indicates that a cause-and-effect transition is required.

Key Concept

Transitions: Cause and Effect
Estimated Time:45s
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Topics

Transitions: Cause and Effect

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