------
## 最终结论
```python
def Find_Max(lst):
    max_length = 0
    longest_sublist = []
    for sublist in lst:
        if len(sublist) > max_length:
            max_length = len(sublist)
            longest_sublist = sublist
    return longest_sublist

# Test cases
assert Find_Max([['A'],['A','B'],['A','B','C']]) == ['A','B','C']
assert Find_Max([[1],[1,2],[1,2,3]]) == [1,2,3]
assert Find_Max([[1,1],[1,2,3],[1,5,6,1]]) == [1,5,6,1]
```