Final answer:
Proxy data, such as ice cores and tree rings, are valuable tools for reconstructing past climates, but they come with limitations like limited temporal resolution and the influence of multiple environmental factors. However, they still provide meaningful records of environmental variables.
Step-by-step explanation:
The question asks about the limitations of large-scale climate reconstructions using proxy data. In large-scale climate reconstructions, proxy data provides indirect evidence of past climates but comes with its own limitations. For example, the temporal resolution of proxy data can be limited, meaning that the data may not provide information at the fine time scale that scientists might prefer. Additionally, proxy data may be influenced by multiple environmental factors, not just the climate variable of interest, making it difficult to isolate the specific climate signal. However, one statement among the options provided is not a limitation: 'Proxy records are meaningful recorders of environmental variables.' This indicates an understanding that proxies do indeed provide valuable insights into past climates, even though they might not always be precise or may be affected by several variables simultaneously.