Which of the following is a correct way to read each line from a text file?

Reading lines from a text file can be accomplished in several ways, but one of the most efficient and Pythonic methods is to directly iterate over the file object itself. This allows you to handle each line one at a time without having to read the entire file into memory at once.

When using a for loop to iterate over a file, Python automatically handles the process of reading the file line by line. This means that you can write a simple loop that assigns each line to a variable and processes it within the loop. The statement employed in this approach reads each line until it reaches the end of the file, making it an efficient way to read large files.

This method also implicitly manages the file cursor's position, meaning you don’t have to worry about moving the cursor manually, as Python will handle it for you during the iteration. Furthermore, using this method keeps your code clean and straightforward, which is a vital aspect of writing maintainable Python code.

While the other methods can work to read lines from a file, they may not be as efficient or straightforward in scenarios with larger files or streaming data. For example, reading all lines into a list (as done in one of the other options) consumes more memory than necessary because it keeps all