The chosen page is referred to as the canonical URL. Google Search Central has published documentation that explains how SEOs and publishes can communicate their preference of which URL to use.

We have covered examples of Google selecting the wrong canonical URL from within your domain, but what about when Google ...

Google Search Advocate clarifies that duplicate content poses operational challenges but doesn't penalize website rankings, ...

Don't go overboard to create elaborately long URLs just to pack your keywords in; but at the same time avoid the "slug," as it's often called, which is a one-word description of a piece of content. A ...