If there is only a discrete number of possible outcomes called . . . . . . . .

The correct answer is: Categories.

A discrete number of possible outcomes is called a category. For example, the possible outcomes of rolling a six-sided die are 1, 2, 3, 4, 5, and 6. These are all discrete numbers, and they are all possible outcomes of rolling the die.

A model-free algorithm is an algorithm that does not use a model of the environment to make predictions. Instead, it uses a set of rules or heuristics to make decisions.

A prediction is a statement about what is likely to happen in the future. It is based on evidence and analysis.

None of the above is not the correct answer.