Correct Answer: Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

Solution : The correct answer is (b) Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

The assertion is true. Marketing management does indeed focus on delivering customer value and satisfaction. It involves understanding customer needs and preferences, developing products or services that meet those needs, and delivering value to customers to satisfy them and build long-term relationships.

The reason is not the correct explanation. The reason incorrectly states that marketing management is solely about increasing sales volume. While increasing sales volume is a goal of marketing management, it's not the sole focus. The primary focus is on understanding and meeting customer needs and delivering value, which naturally leads to increased sales volume through customer satisfaction and loyalty.

In summary, both the assertion and reason are true, but the reason is not the correct explanation of the assertion.