How do you remove all elements from a list?

How do you remove all elements from a list?

• A. Using drop()
• B. Using clear()
• C. Using empty()
• D. Using reset()

Answer: (B)

The method that correctly removes all elements from a list in Python is the clear() method. When this method is called on a list, it will directly modify the list by emptying it of all its elements, resulting in a list that has a length of zero. Using clear() is straightforward and efficient, as it is specifically designed for this purpose in the Python list class. This is particularly useful when you want to maintain the reference to the original list but simply want to remove all its contents. The other options do not correspond to any methods or functions that effectively clear a list in Python. For instance, drop(), empty(), and reset() are not standard methods for lists in Python. Their mention may lead to confusion, but they do not serve to achieve the goal of removing all elements from a list. Thus, clear() stands out as the appropriate and correct answer.

The method that correctly removes all elements from a list in Python is the clear() method. When this method is called on a list, it will directly modify the list by emptying it of all its elements, resulting in a list that has a length of zero.

Using clear() is straightforward and efficient, as it is specifically designed for this purpose in the Python list class. This is particularly useful when you want to maintain the reference to the original list but simply want to remove all its contents.

The other options do not correspond to any methods or functions that effectively clear a list in Python. For instance, drop(), empty(), and reset() are not standard methods for lists in Python. Their mention may lead to confusion, but they do not serve to achieve the goal of removing all elements from a list. Thus, clear() stands out as the appropriate and correct answer.