Answer: c. Used to call the return value for the function.
Explanation: In Sass, the @return directive is used to call the return value for the function.
Answer: c. :css_location
Explanation: The :css_location operator provides the path for the CSS stylesheets in the application.
Answer: a. True
Explanation: The above statement is true. The "sass input.scss output.css" command is used to run the SASS code from the command line.
Answer: a. Web server interface
Explanation: RACK is a web server interface. Rack provides a minimal interface between webservers that support Ruby and Ruby frameworks.
Answer: b. Merb
Answer: a. Rails
Explanation: Rails is an open-source web framework. Rails, is a server-side web application framework written in Ruby. It is a model-view-controller (MVC) framework, providing default structures for a database, a web service, and web pages.