_____ ensures security of data even if it lands in wrong hands, because the receiver of data will not be able to decode and interpret it.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Encryption
Encryption scrambles data into a form that cannot be read without the key. Even if the data reaches the wrong person, it cannot be decoded and used. A password only controls who may open the system; grouping and classification are ways of arranging accounts, not of protecting them.
NCERT (2026-27 edition):
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