------
## 最终结论
```python
def extract_nth_element(tuples_list, n):
    return [t[n] for t in tuples_list]

# Test cases
assert extract_nth_element([('Greyson Fulton', 98, 99), ('Brady Kent', 97, 96), ('Wyatt Knott', 91, 94), ('Beau Turnbull', 94, 98)] ,0)==['Greyson Fulton', 'Brady Kent', 'Wyatt Knott', 'Beau Turnbull']
assert extract_nth_element([('Greyson Fulton', 98, 99), ('Brady Kent', 97, 96), ('Wyatt Knott', 91, 94), ('Beau Turnbull', 94, 98)] ,2)==[99, 96, 94, 98]
assert extract_nth_element([('Greyson Fulton', 98, 99), ('Brady Kent', 97, 96), ('Wyatt Knott', 91, 94), ('Beau Turnbull', 94, 98)],1)==[98, 97, 91, 94]
```