What was the military strategy behind island hopping? Was it successful

 The strategy behind island-hopping was one involving a progressive approach towards Japan achieved through the capture of important island bases. It was successful in that it provided many airfields from which US forces could attack Japan and, ultimately, end the war.

The correct option is ΔABC ≅ ΔFED by SAS

Step-by-step explanation:

Looking at the given diagram,

Side AC = Side DF = 3.2

Side AB = Side FE = 4 units

Angle A = angle F = 72 degrees

Since two sides and one angle are equal, then triangle FED = triangle ABC by SAS(side angle side)

This makes the ratios possible

AB/FE = AC/DF

The HL given means hypotenuse leg. It will not hold because the triangles are not right angle triangles.