1. The first question asks about the ISO standard for managing environmental responsibilities. The correct answer is ISO 14000, which provides guidelines for environmental management systems. 2. The second question states "The essence of marketing is the exchange process." This is True because marketing fundamentally involves exchanging value between buyers and sellers. 3. The third question asks about the four main functions businesses are built around. The correct answer is Production, Marketing, Management, and Finance, which are core business functions. These questions are related to business and management concepts, not mathematics.