Examkin

Question

Difficulty: EasyExtracting Supporting Details and Facts

An excerpt from an academic oral presentation on agricultural heritage restoration states: "To protect traditional wetland farming in southern Mexico City, researchers and local farmers collaborated to rehabilitate 45 active chinampa plots. As part of this initiative, the team installed biological filtration channels built from gravel and native tule reeds. Over a three-year period, these eco-friendly filters reduced heavy metal levels in irrigation water by 38 percent, ensuring safe soil conditions for organic vegetable cultivation."

According to the presentation, what specific action was taken across the 45 agricultural plots to improve water quality?

  1. A
    Transforming the entire historic wetland zone into a commercial wholesale market
  2. B
    Applying synthetic chemical purifiers to eliminate bacteria from the canals
  3. Installing biological filtration channels constructed from gravel and native reedsAnswer
  4. D
    Constructing solid concrete barriers to permanently block all incoming irrigation flow

Answer

Installing biological filtration channels constructed from gravel and native reeds
The presentation directly states that the researchers and farmers installed biological filtration channels made of gravel and native tule reeds to filter the water across the agricultural plots.

Step-by-Step Solution

1
Identify the target question focus
The question asks for the specific physical action implemented on the 45 plots to improve water quality.
Clarifying the specific detail required prevents confusion with broader goals or unrelated facts.
2
Locate the relevant factual detail in the presentation transcript
The transcript explicitly notes: 'the team installed biological filtration channels built from gravel and native tule reeds.'
Direct retrieval of the supporting fact provides the exact basis for the correct answer.
3
Match the extracted fact to the corresponding answer choice
The statement describing the installation of gravel and reed biological filters directly matches the spoken text.
Verifying exact alignment ensures complete factual accuracy.

Key Concept

Extracting Supporting Details and Facts
Rate this question

Topics

Extracting Supporting Details and Facts

More questions from this topic