Examkin

Question

Difficulty: Very hardExtracting Supporting Details and Facts

Transcript of the audio presentation (in Spanish):

"Bienvenidos a nuestra conferencia anual sobre biodiversidad. Hoy nos enfocaremos en la conservación del ajolote, un anfibio endémico de México. A diferencia de otras especies que solo habitan en canales aislados, el ajolote se encontraba originalmente en todo el sistema lacustre del Valle de México. Según el censo de 1998, había alrededor de 6.000 ejemplares por kilómetro cuadrado. Sin embargo, los datos más recientes de 2014 revelaron una caída alarmante a solo 36 individuos por kilómetro cuadrado. Esta disminución no se debe principalmente a la pesca tradicional, como muchos asumen, sino a la introducción de especies invasoras como la carpa y la tilapia en la década de 1970, apoyada por programas gubernamentales de acuicultura. Además, la expansión urbana ha reducido su hábitat natural en un 80% en los últimos cincuenta años. Para contrarrestar esto, el proyecto 'Chinampa-Refugio', iniciado en 2012, no aísla a los ajolotes en laboratorios, sino que incentiva a los agricultores locales a restaurar los canales tradicionales mediante barreras naturales, logrando hasta ahora restaurar cinco kilómetros de canales."

Based on the details provided in the presentation, which of the following statements is factually correct?

  1. Government-supported aquaculture initiatives in the 1970s contributed significantly to the severe population decline of the species.Answer
  2. B
    The primary focus of the entire presentation is to announce the completion of five kilometers of canal restoration.
  3. C
    The speaker expresses a dismissive and critical attitude toward local farmers, blaming them for the habitat reduction.
  4. D
    The axolotl is described as an invasive species that was introduced to the Valley of Mexico to support aquaculture.

Answer

Government-supported aquaculture initiatives in the 1970s contributed significantly to the severe population decline of the species.
The transcript explicitly connects the severe drop in population to the introduction of invasive species like carp and tilapia in the 1970s, which was supported by government aquaculture programs ('apoyada por programas gubernamentales de acuicultura').

Step-by-Step Solution

1
Analyze the transcript to identify the stated causes for the population decline of the axolotl.
The speaker contrasts traditional fishing (which is not the main cause) with the introduction of invasive species (carp and tilapia) in the 1970s.
This establishes the factual basis for the species' decline.
2
Examine the specific context surrounding the invasive species introduction.
The transcript notes that this introduction was supported by government aquaculture programs ('apoyada por programas gubernamentales de acuicultura').
This directly connects the government programs to the decline, confirming the accuracy of the correct statement.
3
Evaluate the distractors against specific details and tone in the text.
The 5km restoration is a minor detail, not the main focus. The speaker does not blame farmers, but rather praises their involvement. The axolotl is endemic, not invasive.
This process of elimination verifies that the distractors rely on misinterpreting the main idea, misjudging tone, and confusing cultural/geographic references.

Key Concept

Extracting Supporting Details and Facts
Rate this question

Topics

Extracting Supporting Details and Facts

More questions from this topic