The correct answer is B. Occurrence.
The word "occurrence" means "the fact of happening or taking place." It is a noun that is derived from the verb "occur," which means "to happen or take place." The word "occurrence" is spelled with two "r"s and one "c."
The other options are incorrect because they are either misspelled or do not make sense in the context of the question. Option A, "Occurrance," is missing an "e." Option C, "Occurance," is missing an "r." Option D, "Occurence," is missing an "r" and an "e."
