Which sentence from “Island of Hope, Island of Tears” contains both a cause and an effect?

“Salvatore, Giuseppe Sicurella's brother, was employed as a barber.”
“Her brother placed a housework-wanted ad in a local paper, and Katherine was soon hired as a governess with a wealthy family.”
“He was 22 years old and felt a responsibility to help his mother and 12 brothers and sisters.”
“His brother Salvatore followed in 1908 and their siblings Antonio, Maria Anna, and Angelina joined them in 1913.”