What is an 'ascot'?

An 'ascot' is correctly identified as a broad neck scarf that is looped under the chin. It is traditionally made of silk and serves both practical and decorative purposes, often associated with formal attire or specific events such as ascot races. The distinctive style allows it to be worn loosely and adds an elegant touch to an outfit, making it a popular choice in fashion contexts that require a dress code.

In contrast to the other options, trousers refer to lower garments, hats are headwear, and formal shirts are upper garments worn beneath jackets. None of these directly match the definition of an ascot, emphasizing the unique characteristics of the ascot scarf itself.