Is that okay to put period after etc

The answer is: d. the death of Hector meant the end of Troy.

Hector was the hero of Troy, due to this, after his death his father, Hector death is the end of Troy, Prium was already convinced that Hector will lose again Achilles, So after Hector dies the thinks that the Acheans will destroyed his family, the city and take his life.