Question

what is the meaning of the word pertain as used in the passage? ed is studying veterinary medicine at university, so he often reads books and magazines that pertain to animal health issues. articles that relate to the latest medications and treatments available for horses are of particular interest to him, since he plans to be an equine veterinarian—a vet who specializes in the care of horses. to fit together to have to do with to have similar opinions

Explanation:

To determine the meaning of "pertain", we analyze the context. Ed studies veterinary medicine and reads materials about animal health. The sentence also uses "relate to" for similar articles, so "pertain" should mean having a connection or relevance, matching "to have to do with". "To fit together" refers to physical or conceptual fitting, not relevance. "To have similar opinions" is about agreement, not topic relevance.

Answer:

to have to do with