Quaternary Activities

The correct option is (B):Mica.

The correct option is (C):Muslin.

Step 1: Understanding the Concept:
The question asks to identify the economic sector defined by working with information and knowledge.
Step 2: Detailed Explanation:
Let's review the economic sectors:


Primary Activity: Involves extracting raw materials from nature (e.g., farming, mining).
Secondary Activity: Involves processing raw materials into finished goods (e.g., manufacturing, construction).
Tertiary Activity: Involves providing services to consumers and businesses (e.g., retail, transport, healthcare).
Quaternary Activity: This is an advanced sub-sector of tertiary activities. It is centered on knowledge and information. This sector involves activities like the collection, production, and dissemination of information. Examples include research and development (R \& D), information technology (IT), media, consulting, and education. This perfectly matches the question's description.
Step 3: Final Answer:
The activities related to information and knowledge belong to the Quaternary sector.