Meaning: 'Eliminating' means to completely remove or get rid of something, in this case, noise.

Wrong options:

• eliminate: The base form 'eliminate' does not fit here as it would require a different grammatical structure, such as 'approaches to eliminate noise.'
• eliminated: The past participle 'eliminated' suggests a completed action, which does not align with the ongoing nature of urban planning efforts.
• have eliminated: The present perfect form 'have eliminated' implies a completed action with relevance to the present, which does not fit the context of discussing current approaches.

Correct answer: produce

Explanation: The verb 'produce' correctly describes the action of cars creating noise, fitting grammatically and contextually within the sentence structure that discusses the impact of cars on sound levels.

Meaning: 'Produce' means to create or generate something, in this case, noise from cars.

Wrong options:

• conceal: The verb 'conceal' means to hide or keep something out of sight, which does not fit the context of noise generation.
• absorb: The verb 'absorb' means to take in or soak up, which is not applicable here as it does not relate to the creation of noise.
• dent: The verb 'dent' typically refers to making a small hollow mark on a surface, which does not relate to the context of noise production.

Correct answer: role

Explanation: The noun 'role' fits grammatically as it indicates the function or importance of acoustics in architecture, aligning well with the context of discussing its significance in various structures.

Meaning: 'Role' refers to the function or part played by something in a particular situation, here indicating the importance of acoustics in building design.

Wrong options:

• stage: The noun 'stage' refers to a particular point or phase in a process, which does not convey the intended meaning of importance in this context.
• situation: The noun 'situation' refers to a set of circumstances, which does not fit the context of discussing the function of acoustics.
• game: The noun 'game' refers to a form of play or sport, which is unrelated to the context of architecture and acoustics.

Correct answer: rather

Explanation: The adverb 'rather' fits grammatically to introduce a comparison, indicating a preference for considering noise control early in the planning process instead of as an afterthought.

Meaning: 'Rather' means to a certain degree or extent, often used to express a preference or contrast, in this case, emphasizing the importance of early consideration.

Wrong options:

• likely: The adverb 'likely' indicates probability, which does not fit the context of expressing a preference in planning.
• longer: The adverb 'longer' refers to an extended duration, which does not relate to the context of planning considerations.
• more: The adverb 'more' suggests an increase in degree but does not convey the intended contrast or preference as effectively as 'rather.'