Step 1: Understanding the Concept:
The question asks for an example of a traded product whose production is primarily determined by climate. The passage mentions "climate" as one of the physical factors leading to uneven distribution of natural resources.
Step 3: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{(A) Textiles: Production depends on labor costs, industrial infrastructure, and raw materials (like cotton, which is climatic, but textiles themselves are manufactured).} \\ \bullet & \text{(B) Porcelain: Production depends on specific raw materials (kaolin clay) and skilled craftsmanship, which are geological and cultural factors, not climatic.} \\ \bullet & \text{(C) Banana: Bananas are a tropical fruit. Their cultivation is heavily dependent on the specific climatic conditions (temperature, rainfall) found in tropical regions. Countries in non-tropical climates must import them. This is a direct result of climatic factors.} \\ \bullet & \text{(D) Batik cloth: This is a handicraft whose production is based on cultural tradition and skill, not climate.} \\ \end{array}\]
Step 4: Final Answer:
The export of bananas from tropical regions is the best example of trade driven by climatic factors.
Fill in the blank with the correct option.
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.