Direction for the following 4 (four) items: Read the following four passages and answer the items (11-14) that follow. Your answers to these items should be based on the passages only.

A study conducted on the impacts of climate change over the Cauvery basin of Tamil Nadu using regional climate models showed as increasing trend for maximum and minimum temperatures, and a decrease in the number of rainy days. These climatic shifts will have an impact on the hydrological cycles in the region, leading to more run-off and less recharge, and affect on the groundwater tables. Further, there has been an increase in the frequency of droughts in the State. This has driven farmers to increase dependency on groundwater resources to secure their crops.

Which one of the following statements best reflects the crux of the passage given above?

Correct Answer: Climate changes increase the criticality of water resources while simultaneously threatening it.

Explanation:

To determine the best reflection of the main idea (crux) of the passage, let us break down the key points provided in the text step-by-step:

1. Impact of Climate Change on Water Availability (Threatening the Resource):
The passage highlights that climate shifts in the Cauvery basin involve rising temperatures, fewer rainy days, altered hydrological cycles, higher run-off, and reduced groundwater recharge. Furthermore, the frequency of droughts has increased. All these factors show how climate change is actively threatening water resources in the region.

2. Increased Necessity of Water (Increasing Criticality):
Because of these adverse climatic changes and frequent droughts, farmers are increasingly driven to depend on groundwater resources to secure their crops. This reliance demonstrates that water has become even more critical for survival and agriculture.

3. Synthesizing the Crux:
Combining these two main threads, climate change simultaneously increases the vital importance (criticality) of water resources for agricultural survival while severely diminishing and threatening its availability (less recharge, depleted tables, more droughts). Thus, the statement "Climate changes increase the criticality of water resources while simultaneously threatening it" precisely captures the central essence of the passage.

Analysis of Other Options:

• Option 1 ("Development of regional climate models helps in choosing climate-smart agricultural practices"): The passage mentions climate models as a tool used in a study, but it does not discuss choosing "climate-smart agricultural practices."
• Option 2 ("Heavy dependence on groundwater resources can be reduced by adopting dry-land cropping systems"): The passage does not mention dry-land cropping systems or methods to reduce dependence.
• Option 4 ("Climate changes cause the farmers to adopt unsustainable livelihoods and risky coping strategies"): While farmers are relying more on groundwater, the text does not explicitly label their actions as "unsustainable livelihoods" or "risky coping strategies."