Read the excerpt from "Island of Hope, Island of Tears." If illness was suspected, immigrants were detained at Ellis Island's hospital complex.

Which statement best describes the text structure of this sentence and explains why it is used?

A sequence text structure is used to describe the order of events at Ellis Island's hospital complex.
A compare-and-contrast text structure is used to show the relationship between illness and treatment.
A sequence text structure is used to explain the order of events that occurred after an immigrant was detained.
A cause-and-effect text structure is used to explain why immigrants could be detained at the hospital complex.