The correct answer is A. Enterance. The correct spelling is entrance.
The word "enterance" is a misspelling of the word "entrance." The word "entrance" is a noun that means "the act of entering a place" or "the place where one enters a place." The word "enterance" is not a word in the English language.
The word "elementary" is an adjective that means "basic" or "fundamental." The word "elementary" is a word in the English language.
The word "endeavour" is a noun that means "a serious attempt to do or achieve something." The word "endeavour" is a word in the English language.
The word "eccentricity" is a noun that means "the quality of being odd or unusual." The word "eccentricity" is a word in the English language.
