What is the purpose of using `ndim` attribute in Series? A). It returns the number of elements in the given data structure. B). It returns the Series object in the form of an ndarray. C). It returns a list of the indexes / labels. D). It returns the number of dimensions of the given data structure.

The correct answer is It returns the number of dimensions of the given data structure.. In Pandas, the `ndim` attribute is used to find the "number of dimensions" of the underlying data. For a Series, this will always return $1$ (since a Series is a one-dimensional array).

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