Question

what is the meaning of the word pertain as used in the passage? isaiah 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 similar opinions to have to do with

Explanation:

In the context, Isaiah reads materials that are about animal - health issues. "Pertain" here means to be related to or have to do with. It is not about fitting together or having similar opinions.

Answer:

to have to do with