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The Palghat Gap or Palakkad Gap, a region about 30 km wide in the southern part of the Western Ghats in India, is lower than the hilly terrain to its north and south. The exact reasons for the formation of this gap are not clear. It results in the neighbouring regions of Tamil Nadu getting more rainfall from the southwest monsoon and the neighbouring regions of Kerala having higher summer temperatures. What can be inferred from this passage?

1. The Palghat Gap is caused by high rainfall and high temperatures in southern Tamil Nadu and Kerala
2. The regions in Tamil Nadu and Kerala that are near the Palghat Gap are low-lying
3. The low terrain of the Palghat Gap has a significant impact on weather patterns in neighbouring parts of Tamil Nadu and Kerala
4. Higher summer temperatures result in higher rainfall near the Palghat Gap area

Correct answer: The low terrain of the Palghat Gap has a significant impact on weather patterns in neighbouring parts of Tamil Nadu and Kerala

Solution

The passage states that the Palghat Gap is lower than surrounding terrain and that it affects rainfall in Tamil Nadu and summer temperatures in Kerala. This supports the inference that the gap's low terrain influences local weather patterns. The other options either reverse causation or add unsupported details.

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