2. Saudi Arabia has life expectancy as 76.
These figures are erroneous.
My thoughts on improvements for this format:
1) the quiz is too 'long' in the sense that graphically it could be more 'compact' (so maybe less spacing between questions and answers, somewhat smaller font? or have the 4 possible answers in the same row when they aren't too long?)
2) it would be nice if you could answer with the keyboard (with keys 1-4 and have automatic scrolling down after you answer)
3) at the end of the quiz you should be allowed to see extra information about the possible choices (eg for question 1 show the population of all 4 possible answers)