Final answer:
A web address is the specific location of a web resource on the internet, with a synonym being URL, or Uniform Resource Locator.
A URL is an example of a URI, a more general term. In scholarly communication, a DOI is used as a permanent identifier for documents.
The Correct option is; a) Unique address, synonym: URL.
Step-by-step explanation:
The term web address refers to the specific location of a web resource on the internet, akin to how a physical address denotes the location of a building. A synonym for web address is URL, which stands for Uniform Resource Locator.
A URL is composed of various parts, including the protocol (such as HTTP or HTTPS), domain name, and path, that together direct a browser to a particular web page or file on a server.
While URI (Uniform Resource Identifier) is another related term, it is a broader concept that includes URLs. A URI can also refer to something that doesn't necessarily have a physical location on the internet, such as a namespace or a service, making URL a subset of URI.
In the context of research and online articles, it's essential to note another term, DOI which is a Digital Object Identifier. A DOI is a permanent identifier used to locate a document on the internet, ensuring that even if the URL of the document changes, the DOI will still lead to the correct resource.