"A la niña le gustan las botas."
Translation:The girl likes the boots.
Because the Spanish construction is completely different than the English one. In Spanish, gustar doesn't mean to like. gustar = to please. The usual way of saying in Spanish is not X like(s) Y, but Y please(s) to X or to X, Y please(s) = a X, Y le(s) gusta(n). Since in Spanish, it's possible and common to invert the subject and the verb when the subject doesn't come at the beginning of the sentence a X, Y le(s) gusta(n) = a X le(s) gusta(n) Y
To sum it up, we have A la niña le gustan las botas = A la niña, las botas le gustan = To the girl, the boots please = The girl likes the boots