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Difficulty: HardTransitions: Elaboration and Exemplification

Although marine biologists once assumed that deep-sea hydrothermal vent communities were entirely isolated from pelagic ecosystems, recent biogeochemical analyses suggest a significant degree of ecological connectivity between the two zones. __________, researchers have traced organic carbon compounds synthesized by chemotrophic vent bacteria up through the water column, finding their signatures in the tissue samples of surface-dwelling zooplankton.

Which choice completes the passage with the most logical transition?

  1. A
    Subsequently,
  2. Indeed,Answer
  3. C
    Conversely,
  4. D
    Consequently,

Answer

Indeed,
The transition 'Indeed,' is correct because it logically connects the two sentences by introducing a statement that elaborates on and provides specific evidence for the claim made in the first sentence. The first sentence asserts that there is a significant degree of ecological connectivity between deep-sea vent communities and pelagic ecosystems. The second sentence reinforces and details this assertion by describing how researchers tracked carbon compounds from vent bacteria in the tissues of surface-dwelling zooplankton.

Step-by-Step Solution

1
Analyze the relationship between the two sentences separated by the blank.
The first sentence asserts that deep-sea vent communities and pelagic ecosystems share a significant degree of ecological connectivity. The second sentence provides specific scientific evidence of this connectivity by describing how carbon compounds from vent bacteria are found in surface zooplankton.
Understanding how the two ideas relate to each other is necessary to determine the correct logical transition.
2
Identify the type of transition needed to connect these sentences.
Since the second sentence elaborates on and provides concrete evidence for the general claim in the first sentence, an elaboration or exemplification transition is required.
Matching the logical relationship to a category of transition words narrows down the correct choice.
3
Evaluate the given choices to find the transition that fits this relationship.
The transition 'Indeed,' fits the relationship of elaboration/exemplification. The contrast transition 'Conversely,', the chronological transition 'Subsequently,', and the causal transition 'Consequently,' do not logically fit the context.
Selecting the choice that aligns with the identified logical relationship ensures the correct answer is chosen.

Key Concept

Transitions indicating elaboration or exemplification (such as 'Indeed,' 'Specifically,' or 'For instance') are used to introduce details, evidence, or specific examples that clarify, reinforce, or illustrate a preceding general statement.
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Topics

Transitions: Elaboration and Exemplification

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