The basic characteristic of a “sequential data set/problem,” which is absent in non-sequence problems, is that:
(Choose the option that captures the essence of a “sequence.”)
A sequence contains multiple elements that are fed to the network one by one in any order but not all at once.
The elements of a sequence can be reordered without affecting the sequence.
There is significant dependence between the elements of a sequence, and the order of the elements is important.