"Environment": The circumstances, objects, or conditions by which one is surrounded (Merriam Webster)
"-al" means pertaining to
so environmental means: Pertaining to the circumstances, objects or condition by which one is surrounded.
Answer:
B) the arrival of the Cretan soldiers
Explanation:
Cretan soldiers had the ability to promote fear in the hearts of Athenians who knew the aggressive and destructive military tactics that Cretans possessed, in addition to their thirst for victories against the populations they were fighting. Fearing scenarios of violence and the insecurity that settled in Athens, after the arrival of soldiers from Crete, the Athenians hid in their homes, to protect themselves.