The saying about swallows flying high is generally true and is based on their behavior related to weather conditions. Swallows tend to fly higher in clear weather to find food and avoid turbulence from storms. However, it's important to note that this saying should be considered a guideline rather than an absolute rule. ;
The saying about swallows flying high is generally true as it reflects their behavior during good weather when they search for food. Swallows fly high to avoid turbulence and seek insects, while low-flying swallows may indicate bad weather. Therefore, the correct answer is C: Is generally true due to scientific factors.
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