None of the options listed (trade debtors, stock of goods, trade creditors, motor vehicles) are examples of intangible assets.

Intangible assets are non-physical assets that have a monetary value since they represent potential revenue. Intangible assets include patents, copyrights, franchises, goodwill, trademarks, and trade names.

The value of these assets is not physical (you can’t touch a patent), but they can still be very valuable for a company.