Questions: Robbie's financial advisor referred a customer to Robbie's new business. Under the concept of Robbie is now obligated to return the favor. A social networking (B) unlimited liability (C) reciprocation (D) social capital

The answer is (C) reciprocation: Robbie is now obligated to return the favor.

Explanation for each option:

A. Social networking: This refers to the use of social networks to build and maintain relationships, often for personal or professional gain. While social networking can involve mutual exchanges, it does not specifically imply an obligation to return a favor.

B. Unlimited liability: This is a legal term used in business to describe a situation where the owners are personally responsible for all of the business's debts. This concept is not related to the obligation to return a favor.

C. Reciprocation: This is the correct answer. Reciprocation is a social norm where if someone does something for you, you feel obligated to return the favor. In this case, since Robbie's financial advisor referred a customer to Robbie's new business, Robbie is now obligated to return the favor under the concept of reciprocation.

D. Social capital: This refers to the networks of relationships among people who live and work in a particular society, enabling that society to function effectively. While social capital can involve mutual exchanges and benefits, it does not specifically imply an obligation to return a favor in the same direct manner as reciprocation.

Therefore, the correct answer is (C) reciprocation.