Which function generates a random number between 0 and 1?

The function that generates a random number between 0 and 1 is Rnd(). This function is designed to produce a floating-point number in the range of 0 (inclusive) to 1 (exclusive). When called without any arguments, it will return a pseudo-random number, making it useful for applications that require randomization, such as games or simulations.

Randomize() is often used in computing contexts to initialize the random number generator with a seed value, which can help to produce a different sequence of random numbers each time the program runs, but it does not generate a random number by itself.

Int() is a function that is typically used to convert a floating-point number to an integer by truncating the decimal portion. It does not have any functionality related to generating random numbers.

Accumulate() is not a standard function typically associated with random number generation and often refers to a method of summing or accumulating values, which is unrelated to generating random numbers.

Thus, Rnd() is the correct choice, as it directly fulfills the requirement of producing a random number within the specified range.