Concept:The Nok civilization provides archaeological evidence of cultural and technological development in ancient Nigeria.Explanation:Archaeological findings from the Nok culture show tools and artefacts from the early, middle, and late Stone Age.Later discoveries also reveal the Nok people's use of iron technology.This sequence of stone and iron tools proves that the inhabitants progressed through different stages of development over time.Therefore, the Nok civilization suggests that Nigeria did not emerge suddenly but passed through successive historical phases.Answer:A. Nigeria passed through different stages of development.