Which best describes the reliability of the information?
it is not reliable because only scientists can use scientific information for reference.
it is not reliable because it doesn’t talk about how to test and only gives data about the breeds.
it is reliable because the article is based on multiple studies done by scientists at multiple veterinary schools.
it is reliable because it gives information about both types of labradors in addition to information about other types of dogs.

There is no information attached but you can analyze which point make any piece of information reliable in general. The most important thing is that information was extracted from experiences that approved by scientists from defferent sphere, so that different people are sure about the same thing. As I understood, this article connected with  veterinary studies and this option looks like the most suitable : It is reliable because the article is based on multiple studies done by scientists at multiple veterinary schools.

The answer to this would be choice b (diplod)