Which Gospel is believed to have been written between 80-85 CE?

The Gospel believed to have been written between 80-85 CE is Matthew. This Gospel is often considered to have been composed after Mark, which is widely dated to around 65-70 CE. Matthew incorporates much of Mark's material but also includes unique teachings and narratives, indicating a later date of composition. Additionally, it is thought to have been written for a primarily Jewish audience, emphasizing Jesus as the fulfillment of Old Testament prophecies. The timing of its writing reflects the evolving context of the early Christian community, as it sought to establish its identity in relation to Jewish traditions and the growing Gentile audience.

Luke is also considered to have been written in a similar timeframe, but it is generally placed a bit later than Matthew, around 85-90 CE, thus making Matthew the correct response to the specific date range provided in the question.