Which method adds an element to the end of a list?Answer areaappend()add()insert()extend()

Break Down the Problem

1. We need to identify a method used in programming (specifically Python) to add an element to the end of a list.
2. The options given are:
   • append()
   • add()
   • insert()
   • extend()

Relevant Concepts

• append(): This method adds a single element to the end of a list.
• add(): This is not a valid method for lists in Python. It is used with sets.
• insert(): This method allows adding an element at a specified position, not just at the end.
• extend(): This method can add multiple elements to a list but does so by extending the list, not by appending a single element.

Analysis and Detail

• The append() method is the only one that adds a single element at the end of the list. For instance, if we have a list my_list = [1, 2, 3] and we use my_list.append(4), the result will be [1, 2, 3, 4], which confirms that it adds the 4 at the end.
• Using insert() can specify a position and will not add to the end unless using the length of the list as the index.
• The extend() method can add more than one item at a time, but it requires an iterable like a list or a set, which means it doesn't directly append a single element as append() does.

Verify and Summarize

Given the explanations and differences among the methods, the most suitable method to add a single element to the end of a list is append(). Other options either do not fit the requirement or serve different purposes.

Final Answer

The method that adds an element to the end of a list is append().