Which function converts a string to upper case?

Which function converts a string to upper case?

• A. UPPER()
• B. LOWER()
• C. INITCAP()
• D. TRIM()

Answer: (A)

Converting all letters in a string to uppercase. This is exactly what the function does: it applies the uppercase mapping to every character in the string, turning letters like a–z into A–Z. For example, applying it to "Hello World" produces "HELLO WORLD." That makes it the direct tool for this task and the best answer when you need a string in all uppercase. The other functions perform different operations: one lowers every letter, one capitalizes the first letter of each word, and one trims whitespace without changing letter case, so they won’t produce an all-uppercase result.

Converting all letters in a string to uppercase. This is exactly what the function does: it applies the uppercase mapping to every character in the string, turning letters like a–z into A–Z. For example, applying it to "Hello World" produces "HELLO WORLD." That makes it the direct tool for this task and the best answer when you need a string in all uppercase. The other functions perform different operations: one lowers every letter, one capitalizes the first letter of each word, and one trims whitespace without changing letter case, so they won’t produce an all-uppercase result.