Concept:The question tests your ability to identify a word with incorrect spelling from a given list.Explanation:Check each option for correct spelling.Option A: "Occurrence" is the standard spelling meaning an event. It is correct.Option B: "Surveillance" is the correct spelling for close observation. No error.Option C: "Consciencious" is misspelled. The correct spelling is "Conscientious", meaning diligent and thorough.Option D: "Benevolent" means kind and is spelled correctly.Therefore, only option C contains a spelling mistake.Answer:C. Consciencious