Wow thats horrible Lettuce and mealworms? WOW. Not to mention that while a 40 gal works, Most of us will agree its the absolute smallest that should be used for housing adults. Play sand is OK for older dragons, the risk isnt there like it is with the littler ones, plus play sand is the preferable type of sand if you insist, but I personally will never use loose substrate unless I have the time and energy to put into bioactive substrate.
LOL...wow...I am doing everything wrong then. I have a UVB, a heat light incandescent flood, no night/infrared (which is spelled wrong in the quiz) red light , and they are in 75 gallon tanks with tile substrate. I have never fed a mealworm or lettuce to them once.
I don't take quizzes , usually they are timewasters and most the answers are wrong or inappropriate.
I'm willing to bet the quizzes referred to were put together by :
quiz answers :
a) someone who knows diddlelysquat about bearded dragon husbandry and care
b) a pet shop chain's stuff
c) someone who has never successfully kept a bearded dragon
e) some who wants to sell the products mentioned (all inappropriate)
f) all the above.