Difficulty: Easy
Correct Answer: to not to
Explanation:
Introduction / Context:This question examines infinitive usage and placement of “not”. In formal English, after “advised … to”, we use the infinitive “not to + verb”, not the doubled form “to not to”.
Given Data / Assumptions:
Concept / Approach:
Step-by-Step Solution:
Identify the complement: “advise [people] not to indulge in gossip”.Remove the redundant “to” before “not”.Correct sentence: “The Head of the Department advised all the staff not to indulge in gossip.”Verification / Alternative check:
Paraphrase with a gerund: “advised … against indulging in gossip” — also grammatical, confirming the intended prohibition.Why Other Options Are Wrong:
A, B, and D are fine; D uses a standard collocation “indulge in”.E is wrong because C contains a clear error.Common Pitfalls:
Inserting “to” twice; confusing the acceptable split “to not indulge” (stylistic) with the incorrect “to not to indulge”.Final Answer:
to not to
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