Which sentence contains parallel structure?
Derrick’s sister was proud that her big brother coached her soccer team.
Derrick coached his sister’s soccer team and managed his brother’s baseball team.
Derrick had managed his brother’s baseball team for the past three seasons.
Derrick was a great older brother, helping to coach his siblings’ sports teams each season.
"Parallel sentence structure" basically means that the sentence uses repetitive phrasing and the two clauses will generally be close to the same length.
