Final answer:
To modify 'short_names', delete the first element of the given list and change the last element to 'Joe', resulting in the updated list ['Beth', 'Charlie', 'Joe'].
Step-by-step explanation:
To modify the list named short_names by deleting its first element and changing the last element to 'Joe', we can follow these steps:
- Delete the first element.
- Change the last element to 'Joe'.
Given the original list is ['Alex', 'Beth', 'Charlie', 'David'], after deleting the first element, we get ['Beth', 'Charlie', 'David']. Then we change the last element ('David') to 'Joe' which gives us the final list of ['Beth', 'Charlie', 'Joe'].