1. The first question asks: "A variable that can take on a countable, finite value." This describes a discrete random variable. 2. The formula for discrete random variables is that they take on countable values, often integers, and probabilities sum to 1. 3. A continuous random variable takes on any value in an interval, infinite and uncountable. 4. For question 1, the answer is A) Discrete random variable. Final answer: A