Question Detail
Question
Which of the following string methods converts all characters in a string to uppercase?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The 'Essential String Methods' table explicitly lists
.upper() as the method that 'Converts character casing completely' to uppercase, with the example 'Hi'.upper() → 'HI'.
Hint
Look for the method related to 'upper' case.