well, people have two normally, but you can become connected to them all if you practice elemental magic. first is the element you're born under, take your zodiac sign, it'll show you what element it's connected to. the other is what you feel drawn to the most. i'm water/earth. originally i was water/fire, i'm born under a transition day so i need to take from 2 zodiacs, as i've grown i've pulled away from one and am drawn closer to another which is also why my element has changed from fire to earth. i still feel a connection to fire, but not as strong as it once was. keep in mind you're not stuck with just one element, you'll just pick up quicker when dealing with it. i have an energetic friend who's born under a fire sign, when she casts the circle, it's hot, and the south candle burns down way too fast.
Earth: Taurus, Capricorn, Virgo
Air: Gemini, Libra, Aquarius
Fire: Leo, Sagittarius, Aries
Water: Cancer, Scorpio, Pisces