Question

a \blitz\ is different from a \blitzkrieg\ because only a \blitz\
○ targets civilians.
○ relies exclusively on air power.
○ takes place at great speed.
○ destroys large portions of the country.

Explanation:

Blitzkrieg (German for "lightning war") is a combined arms military tactic using air support, armor, and infantry for rapid, coordinated attacks on military targets. The "Blitz" specifically refers to the German air raids on British civilian centers during WWII, relying solely on air power to target civilian areas, unlike blitzkrieg's combined approach.

Answer:

relies exclusively on air power.