Respuesta :

annihilation : obliteration

if the choices were:

strategy : tactics
sensation : numbness
deliberation : impulsiveness
endeavor : quit 

Then the word pair that would best complete the analogy is:
STRATEGY : TACTICS

Annihilation and obliteration are synonymous. In fact, annihilation is defined as complete destruction or complete obliteration. Obliteration is defined as total destruction.

Strategy and tactics are also synonymous. They both mean a system or mode of procedure or a plan of action.

The rest of the choices are antonyms.