To access the 'z' in the string 'baz' from the given list:

The string 'baz' is located in the third position of the nested list (inside x[1][2]), and you can access the character 'z' by indexing into the string:

Here's the breakdown:

• x[1] accesses the second element of the outer list: [3.141, 20, [30, 'baz', 2.718]].
• x[1][2] accesses the third element of that list: [30, 'baz', 2.718].
• x[1][2][1] accesses the second element of that inner list: 'baz'.
• x[1][2][1][2] accesses the third character of the string 'baz', which is 'z'.

So, the correct expression is: