It's a little unclear what you're asking, but I believe it's <span> B separation of powers</span>
A) Bias
noun
prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.
Answer:
If they didn't use air blockade then the people in Berlin could not have escaped from the Soviet blockade.
Explanation:
Both C and D were both male rulers, so we can rule them out.
Next comes Hatshepsut and Cleopatra.
Cleopatra was a co-regent. Even though she was a very strong person of history, Hatshepsut takes the answer.
Hatshepsut ruled for a whopping 20 years, making her considered one of the most successful female Egyptian rulers.
Hope this helps!