All that hair pulling, and it all came down to forgetting the 'i' in mysqli_fetch_array.
It's working now, of course.
Thank you greatly, Benanamen.
Regarding your suggestion to use PDO, where do you learn about that? I'm obviously a newb and I've been studying this book titled 'PHP and MySQL for Dynamic Web Sites' by Larry Ulman. Oddly, I don't see that he has an example to populate a drop down. Besides that, I've had mixed feeling about the book from the content itself to the presentation of the ebook.
Are you aware of a book or source for a somewhat-beginner to get up to speed on PHP and mysql, like one that actually talks about PDO instead of mysqli?