Random selection with replacement.
RandomChoice[{e1, e2, …}]
RandomChoice[list, n]
RandomChoice[list, {n1, n2, …}]
RandomChoice[{w1, w2, …} -> {e1, e2, …}]
RandomChoice[wlist -> elist, n]
RandomChoice[wlist -> elist, {n1, n2, …}]
RandomChoice[{x}]
→ x