_________ with someone else's email account is now a very serious offence.
A. Involving B. Assisting C. Tampering D. Incubating
GATE 2017 · General Aptitude · Most Appropriate Word · medium
Answer: The correct word is 'Tampering' (C).
Analyse the legal/criminal context: The sentence says the act is 'a very serious offence', implying illegal, unauthorized action. The subject interacts with 'someone else's email account', suggesting intrusion.
Match word meaning to context: A. Involving — too neutral. B. Assisting — suggests helping, not intruding. D. Incubating — biological term, irrelevant. C. Tampering — specifically means unauthorized interference/alteration, fits perfectly.