Final answer:
A Web portal is defined by a combination of useful information and links, including a search engine and often daily headlines, acting as an entry point to the Web. It provides grouped resources and information in an easily accessible manner, with reliability being important when considering the source of the information.
Step-by-step explanation:
The question, "What defines a Web portal?" relates to the features and functionalities that characterize a Web portal. A Web portal is defined as a website that acts as an entry point to the Web, combining useful information, links, a search engine, and sometimes daily headlines among other items of interest. The correct answer to what defines a Web portal is C) a Combination of information and links. This can include, but is not limited to, links to various subjects or topics, a search facility to find information quickly, and curated content like daily news or articles that users might find relevant or interesting.
Historically, building Web portals during the early era of the internet, known as Web 1.0, was accessible to many people with modest skills. However, in the Web 2.0 era, the accessibility to build such complex sites might not be as widespread due to the sophisticated nature of web development today. Additionally, seeking reliable resources through a Web portal is also important, as sourcing information from reputable websites recommended by academics or linked to credible sources is generally more trustworthy than random search results.