Question 3. Choose a, b or c as the best answer. 3. The speaker seems to be most concerned about

Question

BlackTom AI · Accepted Answer

Urban heat stress — the tendency for built environments to become significantly hotter than their surroundings — is the central concept here, because it explains both human discomfort and damage to urban vegetation and infrastructure.

1) Relevant knowledge points and concepts
- Urban Heat Island (UHI): paved surfaces, buildings, and reduced evaporative cooling raise temperatures in cities.
- Heat stress effects: higher daytime temperatures and heatwaves lead to stressed plants, increased water demand, and human thermal discomfort/health risk.
- Distinction between problems, causes, and locations: a primary concern can be a broad phenomenon (heat stress), while lack of trees is a contributing cause, and mentioning a specific city (Melbourne) is narrower than the general problem.

2) Step-by-step reasoning
- Read the three answer choices and compare scope: (a) names a broad environmental problem (heat stress in urban landscapes); (b) focuses on Melbourne’s climate (a location-specific complaint); (c) focuses on one specific cause (lack of trees).
- If the speaker repeatedly emphasizes high temperatures, stressed vegetation, increased irrigation, or thermal discomfort in cities, the overall concern described is the phenomenon of heat stress rather than merely complaining about Melbourne or isolating one cause.
- Therefore choose the option whose scope best matches the described concern: heat stress in urban landscapes.

3) Intermediate logical steps
- Identify whether the speaker’s statements describe consequences (wilting plants, hotter pavements, health risks) — these point to heat stress.
- Check whether the speaker only mentions Melbourne; if not, option b is too specific.
- Check whether the speaker blames only tree loss; if they discuss many heat-related impacts, option c is too narrow.

4) Why the correct answer is correct
- Option (a) captures the overall phenomenon the speaker is most concerned about: elevated urban temperatures and their effects. It encompasses both human and ecological impacts, matching a typical speaker’s broader concern.

5) Why other options are incorrect
- (b) Melbourne’s unpleasant climate is location-specific and narrower; it doesn’t capture the general environmental phenomenon.
- (c) The lack of trees is a contributing factor, not the speaker’s primary stated concern if multiple heat-related impacts are discussed.

Conclusion: The best choice is a. Heat stress in urban landscapes., which matches the provided answer.

Question 3. Choose a, b or c as the best answer. 3. The speaker seems to be most concerned aboutSingle choice

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