Question: How do you add Ruby code inside Rails views and have its result outputted in the HTML file?

1. Create an embedded Ruby file (.html.erb) and surround the Ruby code with `<% %>`.
2. Insert Ruby code inside standard HTML files and surround it with `<% %>`. The web server will handle the rest.
3. Create an embedded Ruby file (.html.erb) and surround the Ruby code with `<%= %>`.
4. Put the code in an .rb file and include it in a `` tag of an HTML file.

Answer: The correct answer of the above question is Option C:Create an embedded Ruby file (.html.erb) and surround the Ruby code with `<%= %>`.