Enigma is a Jeopardy-like multiple choice quiz tool. Questions are separated into categories. Unlike Jeopardy, every question in a row is given the same score weight.
Selecting a question brings up the question screen. Select an answer choice and click "Submit Final Answer" to return to the main board.
When all questions are answered you will be prompted to submit your answers. This will take you to the score screen to review your score.