Question

Need some help with english....Which of these lacks parallel structure? Lauren is intelligent, compassionate, and has a great sense of humor. Lauren loves flying airplanes, riding roller coasters, and showing horses. Lauren dropped off her library books and visited her grandmother. Lauren has been to the Empire State Building, the Statue of Liberty, and the Freedom Tower.

Answer 1

Lauren is intelligent, compassionate, and has a great sense of humor.

Parallel structure means that you can remove the other elements in the list and the sentence would still make sense. Lauren is has a great sense of humor, doesn't make sense. It therefore lacks parallel structure.

Answer 2

I think the 2nd sentence lacks parallel structure.
She loves flying airplanes,riding roller coasters and showing horses.
The first two are physical  and leisure activities but the last isn't.