Correct Answer: Search engine advertising

Solution : The correct answer is (d) Search engine advertising.

Search engine advertising is a digital marketing channel. It involves placing advertisements on search engine results pages (SERPs) when users search for specific keywords or phrases. These ads are typically displayed at the top or bottom of the search results, and they are targeted based on the search terms entered by users.

Digital marketing channels include various online platforms and mediums such as search engine advertising, social media marketing, email marketing, content marketing, influencer marketing, display advertising, and more. These channels leverage digital technologies and the internet to reach and engage with target audiences.