An engineer needs to ensure that a script has not been modified before it is launched. Which of the following best provides this functionality?

Hashing is the best option because it generates a fixed-size string of characters (a hash value or checksum) from the script's content. If even a single character in the script is changed, the resulting hash value will be completely different. By comparing the current hash of the script with a previously known good hash, the engineer can verify the script's integrity and detect any unauthorized modifications. Masking hides or redacts sensitive data, but doesn't verify integrity. Obfuscation makes code harder to understand, but doesn't prevent or detect modification. Encryption protects data confidentiality by making it unreadable without a key, but it doesn't inherently prove that the encrypted data hasn't been tampered with after decryption.