True if answers has been given
Calculates the maximum score for this task.
Maximum score for this task
Calculates the user's score for this task, for example correct answers subtracted by wrong answers.
User's score for this task
Retrieves the xAPI data necessary for generating result reports.
Resets the task to its initial state, should also show buttons that were hidden by showSolutions
Shows the solution for this task. It should also hide all buttons
Checks if answers for this task has been given, and the program can proceed to calculate scores. Should return false if the user can not proceed yet.