D
And attention deficit, being put on drugs as a child because you have an excess of energy? Jeepers! People medicate everything and then wonder why the world is going sideways. LOL. Oh, but it is not funny, is it, when they have to search children for hidden weapons before they can enter school property? The crazy thing is how many drugs, including antidepressants, have side effects that include depression and an increase in suicidal thoughts.
I've lived with the evidence of that back in the days before home computers. He likes studying the Word, but he sees a word, has to go research that word, then that catches him on something else, and eventually he gets through it all to understand that one passage. BUT we had a study room back then with a loveseat, coffee table and wall-to-wall bookcases. He'd study for four hours and when he was done, there was a spot cleared on the loveseat that told where he sat. The rest was covered with 2-4 layers of big heavy books. (Strong's Concordance is big. Add Englishman's something-another, Lexicons, Bible Picture Words, and tons of others and it gets messy.) The coffee table was solid with a shelf under it and two cupboards on either side of the second shelf. The thing was so covered with books -- up, down, in and out -- that books fell to the side of it. He was surrounded by four feet of books, 2-4 books high, most opened, and all because he wanted to study the Bible.
That is the visual on ADD. He learned to adapt with it, so doesn't take meds, but that's only because he truly likes to learn.