Identify the sentence that lacks parallel structure.

Isabela was competent at throwing the javelin, running hurdle and passing the baton in the relay race.

If everyone could run, jump and throw like Isabela, we would have the best team in the state.

Many students envied Isabella's ability to run hurdles, throwing the javelin and running in the relay race.

The coach advised the students to watch Isabela throwing the javelin, running the hurdles and passing the baton in the relay.

The sentence that lacks parallel structure is: "Many students envied Isabella's ability to run hurdles, throwing the javelin and running in the relay race."