cant understand this from the lesson list operations

Question

Drag and drop from the options below to add 'z' to the end of the list and print the list's length.

list. ____ ('z')
print( ____ _____ )

[len, list, append, insert, index.]

Answer 1

It should be
append : to append z at last of list
and
len(list) : to get length of list

Answer 2

Read on data structures