Concept:Chemical weathering is most effective in hot and wet climates because heat and moisture accelerate chemical reactions.
Explanation:Chemical weathering involves processes such as oxidation, hydration, and carbonation.
These reactions require water as a medium and are speeded up by higher temperatures.
In hot and wet conditions, rainfall supplies abundant moisture while high temperatures increase the rate of reaction.
Cold conditions slow down chemical activity, and dry conditions limit the water needed for reactions to take place.
Therefore, among the given options, hot and wet conditions are the most favourable for chemical weathering.
Answer:B. hot and wet