The correct answer is: C. Economic adviser.
A business economist is an economist who works in the business world. They use their knowledge of economics to help businesses make decisions about things like pricing, investment, and marketing. They may also be involved in forecasting economic trends and analyzing data.
A company secretary is a professional who is responsible for the administrative and legal affairs of a company. They are not typically involved in economic analysis or decision-making.
A liaison officer is a person who acts as a link between two or more groups or organizations. They may be involved in communication, coordination, and problem-solving. However, they are not typically involved in economic analysis or decision-making.
A controller of accounts is a person who is responsible for the financial reporting and accounting of a company. They may be involved in budgeting, forecasting, and financial analysis. However, they are not typically involved in economic analysis or decision-making.