Create a Text-Based / Question-Based “Captcha”

Google’s recaptcha is really good but not always the most optimal tool for stopping spambots. It takes a bit too much space, requires entering app IDs, and sometimes is hard for the visitors to solve. Question based captcha’s are often easier solution. A simple question that requires textual answer is usually enough to keep most bots away, and is easy to code, requires no graphic libraries or API keys.