Why is a resource called a resource only when it is useful?

A. क्योंकि उपयोगिता और तकनीक किसी वस्तु को मूल्यवान बनाते हैं / Because utility and technology make a thing valuable

Step 1: Identify the concept: The idea of resource is linked with utility, value and technology. Step 2: Option A is correct because a material becomes a resource when humans can use it. Step 3: Exam note: Resources are not fixed, they become useful with knowledge and technology.

Step 1: अवधारणा पहचानें: संसाधन की अवधारणा उपयोगिता, मूल्य और तकनीक से जुड़ी है। Step 2: सही विकल्प A है क्योंकि कोई पदार्थ तभी संसाधन बनता है जब मनुष्य उसे उपयोग कर सके। Step 3: Exam note: Resources are not fixed, they become useful with knowledge and technology.