How did Phoenician colonies prove valuable when the assyrians attacked Phoenicia

The colonies were available for the Phoenicians to flee to.

Explanation:

The Phoenicians were not known to be civilized in wars however they were known to be focused on the trade and sea exploration.

Because of this, they made many several colonies along the Mediterranean. Most of them were on the dominant land while others were an island. Through this, the Phoenicians formed safe territories, protecting them from danger, in case it happens to happen in their homes. This protected them and enabled them to continue with their ways of living freely.

Your answer would be B. The colonies were available for the Phoenicians to flee to.