The correct option is D Inflation
The word 'recession' refers to the action of receding.
Option A, poverty refers to the state of being extremely poor.
Option B, computerisation refers to converting in order to be operated by a computer.
Option C, education refers to the theory and practice of teaching.
Option D, inflation refers to the action of amplification.
Thus, according to the meaning, the word 'inflation' is the opposite of the word 'recession'.