Which of the following characterizes a 'moderate climate'?

A moderate climate is typically defined by a temperature range that is not too hot and not too cold, making it suitable for various agricultural and horticultural practices. The average temperature range of 16.5°C to 18.5°C (62°F to 65°F) is often associated with a temperate climate, which allows for a variety of crops to thrive without the extremes of hot or cold that can damage plant life.

This range of temperatures reflects conditions that support moderate growing seasons and can accommodate both cool-weather and warm-weather plants. It also indicates a balance of moisture and sunlight that enhances growth potential throughout the year.

In the context of the other choices, the temperatures associated with them fall outside what is traditionally recognized as 'moderate.' Options with higher temperatures suggest a warmer climate, which could lead to heat stress for certain crops, while those with lower temperatures might indicate a cooler climate that could restrict growth potential or require specific plant adaptations. Overall, the selected range of 16.5°C to 18.5°C provides the stability and suitability that is key to defining a 'moderate climate.'