Which is a common medium of digital advertising?

Correct answer: Social media platform

The direct answer is B: a social media platform. Digital advertising means promoting a product or service through an electronic or internet-based medium. A social media platform allows a business to display pictures, videos, messages, and offers to online users. Therefore it is a common digital advertising medium. Option A, a clay pot, is a physical object and is not normally a digital communication channel. Option B is correct because social media is designed for online communication and can carry advertisements to many users. Option C, a handwritten register, is a paper record; it may store information but does not normally deliver digital advertisements. Option D, a closed warehouse, is a place for storing goods and has no advertising communication function. The reasoning is: digital advertising needs a digital channel; social media provides that channel. The useful exam cue is to connect words such as online, internet, app, website, and social media with the technological environment. Do not choose an ordinary physical object merely because it may be found in a business.