. . . . . . . . is a numeric variable used for counting something.

Accumulator
Counter
Positive
Negative

The correct answer is B. Counter.

A counter is a numeric variable used for counting something. It is typically initialized to a value of 0, and then incremented by 1 each time something is counted. For example, a counter could be used to keep track of the number of times a button has been clicked, or the number of items in a list.

The other options are incorrect. An accumulator is a variable that is used to store the sum of a series of values. A positive number is a number greater than 0, and a negative number is a number less than 0.