Net working capital is the correct answer.

Working capital refers to the funds available to a company for its day-to-day operations. It represents the difference between current assets and current liabilities. Working capital is crucial for the smooth functioning of a business as it helps in meeting short-term obligations and covering operational expenses.

Types of working capital:

1. Regular working capital: It refers to the minimum amount of working capital required to carry out the regular business operations of a company. It is calculated based on the normal operating cycle and sales volume.

2. Gross working capital: It represents the total current assets of a company, including cash, accounts receivable, inventory, and other short-term assets. Gross working capital indicates the total funds invested in current assets to support day-to-day operations.

3. Net working capital: It is the difference between current assets and current liabilities. Net working capital provides a more accurate measure of a company's ability to meet short-term obligations. A positive net working capital indicates that a company has sufficient funds to cover its current liabilities, while a negative net working capital suggests a potential liquidity problem.

4. Floating working capital: It refers to the excess working capital available to a company beyond its regular requirements. Floating working capital is the surplus funds that can be invested in short-term assets or used for other purposes like expansion, acquisitions, or debt repayment.

Explanation:

Among the given options, net working capital is the type of working capital that is financed through a portion of long-term funds. This means that the net working capital requirement is met by utilizing a portion of the long-term funds available to the company.

When a company has excess long-term funds, it can allocate a portion of these funds towards meeting its working capital needs. This helps in maintaining a positive net working capital and ensures the smooth functioning of the business.

It is important to note that net working capital can also be financed through short-term sources such as trade credit, bank overdrafts, and short-term loans. However, in this case, the question specifically mentions the utilization of a portion of long-term funds for financing net working capital.

In conclusion, net working capital is the type of working capital that is financed through a portion of long-term funds. It represents the difference between current assets and current liabilities and is essential for the day-to-day operations of a company.