Which full report correctly handles present-to-past backshift in the core-backshift contrast? Direct from Marta on the laboratory's final day: "I work at the coastal lab."
Marta said that she works at the coastal lab before it closed.
Marta said that she working at the coastal lab before it closed.
Marta said that she did worked at the coastal lab before it closed.
Marta said that she worked at the coastal lab before it closed.✓Правильный ответ
Объяснение
Worked correctly places Marta's employment in the finished period before the laboratory closed. Works leaves the old job current, while working without an auxiliary and did worked are malformed verb phrases.