Working inwards, the outer array holds all the questions and can have more than one if comma separated. The next array holds all the elements for one specific question. These become their own comma-separated arrays. This includes the question array, an array with all the answer choices, a correct answer array and finally an array to state how many answers were considered correct. Remember arrays are zero-based.
const questions = [ [ [ "What does alt text stand for?" ], //Enter Your Question [ "Alter ego text", //Multiple Choice Answer (A) "Alternate text", //Multiple Choice Answer (B) "Alternator text", //Multiple Choice Answer (C) "Alternating text" //Multiple Choice Answer (D) ], ["B"], //Correct Answers  ], //How Many Correct Answers for This Question ];
As an example, to access the correct answer manually and print it to the console, all that would need to write is:
console.log(questions); "Alternate text", //Multiple Choice Answer (B)