Final answer:
The set Y is a 'Finite set' because it consists of a limited number of elements, exactly seven in this case.
Step-by-step explanation:
The set Y described (zero, one, two, three, four, five, six) is an example of a Finite set. A finite set is defined as a set with a limited number of elements, and since Y has exactly seven elements, it is a finite set. Contrast this with an infinite set, which would have an unending number of elements, a singleton set that contains exactly one element, and an equal set refers to two sets with the exact same elements. Therefore, the correct answer is A. Finite set.