The correct spelling is "February." The word "February" originates from the Latin word "Februarius," which means "to purify" and is related to a purification ritual held during this month in ancient Rome. The other options provided are misspellings of the word.
"Febuary" omits the "r" after "b".
"Feburary" incorrectly places the "r" after the "u".
"Febraury" misplaces the "r" between "a" and "u".
Thus, option b) February is the correctly spelt word.