An address for a specific document found on the web is termed

A URL is the address that points to one specific document or resource on the web.

HTTP is the protocol used to fetch pages, not the address of a particular document.

An ISP is the company giving internet access, unrelated to a document's address.

No other choice fits because URL is precisely such an address.

A URL bundles the protocol, host and path needed to locate the file.

URL stands for Uniform Resource Locator.