Which term would best fit a vibrant and lively personality?

The term "ebullient" is the most fitting choice for describing a vibrant and lively personality. It refers to someone who is overflowing with enthusiasm, energy, and excitement. Ebullient individuals often exhibit a cheerful disposition and a spirited demeanor that draws people in and creates a positive atmosphere around them. This term encapsulates the essence of being animated and full of life.

The other terms suggest quite different characteristics. "Pallid" implies a lack of color or liveliness, often associated with dullness or weakness. "Apathetic" describes a state of indifference or lack of interest, which is the opposite of being lively. "Flippant" refers to being superficial or lacking in seriousness, which can indicate a light-heartedness that does not necessarily convey the same enthusiasm and energy associated with liveliness. Thus, "ebullient" stands out as the most appropriate term for someone who embodies a vibrant and lively personality.