Correct answer is They constructed strong cities with walls.
Explanation:
This option is correct because when Heinrich Schliemann discovered well equipped graves near the lion gate at Mycenae, it confirmed Homer's description of the city "rich and gold".
Lion gate was one of the entrances to the city that was encircled by strong walls.
First option is not correct as alphabet already existed, and it is not their discovery.
Third option is not correct and it is more connected with Cretan civilization.
Last option is also not correct, and is more connected to Phoenicia for example.
The best thing to do in this situation is likely to tell
Jennifer in a calm manner as to why you are not able to attend her needs as you
just finished your shift and it is not your time to do what you are supposed to
do as a doctor and that you are going to suggest another doctor that may attend
to her needs.