Explanation:

The correct answer is option 'B' - Trademarks.

Current Assets:
Current assets are the assets that are expected to be converted into cash or used up within one year or within the normal operating cycle of a business. They are listed in the order of their liquidity, i.e., their ability to be converted into cash.

Sub-heads under Current Assets:
a) Cash and cash equivalents
b) Trademarks
c) Short-term loans and advances
d) Inventories

Analysis of each option:
a) Cash and cash equivalents: Cash and cash equivalents include cash on hand, cash in bank accounts, and other highly liquid investments that can be quickly converted into cash. This is a common sub-head under current assets as it represents the most liquid form of assets.
b) Trademarks: Trademarks are intangible assets that represent the exclusive rights to use a particular name, logo, or symbol for a product or service. While trademarks have value, they are not typically included under current assets as they do not have a physical form and cannot be easily converted into cash.
c) Short-term loans and advances: Short-term loans and advances represent the amounts owed to the company by others that are expected to be repaid within one year. This is a common sub-head under current assets as it represents the company's short-term receivables.
d) Inventories: Inventories include goods held by a company for sale or for use in the production process. This can include raw materials, work-in-progress, and finished goods. Inventories are typically included under current assets as they represent items that can be sold or used up within one year.

Conclusion:
Based on the analysis above, option 'B' - Trademarks is not a sub-head under current assets. While trademarks have value, they are considered intangible assets and are not easily convertible into cash. The other options, namely cash and cash equivalents, short-term loans and advances, and inventories, are all common sub-heads under current assets.