30. What is the main purpose of the lecture?

Question

BlackTom AI · Accepted Answer

Question restatement: 30. What is the main purpose of the lecture?

Option a: 'To argue against the practice of sustainable commercial whaling.' This option proposes a normative stance against sustainable whaling, but a lecture’s main purpose is not necessarily to argue a policy position; it could be broader or focused on information about impacts and management. If the lecture were primarily advocacy against sustainable whaling, we would expect emphasis on moral or policy arguments, not necessarily a broad overview.

Option b: 'To explore the different types of whales, their habitats and behaviours.' This option emphasizes taxonomy and descriptive biology. While such content could be part of a lecture, it typically centers on classification and natural history rather than the overarching main goal. If the lecture’s primary aim were simply to catalog species, this would be a narrower objective than identifying threats and conservation needs.

Option c: 'To identify threats to whale populations and discuss conservation efforts.' This option directly centers on risk assessment and management responses—core components of many conservation-focused lectures. It implies analyzing factors harming populations (e.g., bycatch, habitat loss, pollution, climate change) and then examining actions to protect or restore populations, which is a common, overarching purpose for educational talks about wildlife.

Synthesis and rationale: By comparing the options, we assess which description best captures a unifying aim of a lecture about whales. Option a assumes a stance that might be controversial or narrow, option b concentrates on description rather than policy or action, and option c encompasses both understanding threats and considering conservation responses, which aligns with a broad, main-purpose framing for an informative lecture. In typical instructional contexts, a main purpose focusing on identifying threats and discussing conservation efforts provides both analytical content and actionable implications, making it the most comprehensive fit among the choices.

Overall assessment: The statement in option c best aligns with the typical main purpose of a lecture on whale biology and conservation, as it combines threat identification with discussion of conservation responses, whereas options a and b are narrower or less action-oriented in scope.

30. What is the main purpose of the lecture?单项选择题

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