Correct Answer & Explanation
Option C
The word 'DECAY' refers to the state or process of rotting or decomposition, or a gradual decline in quality, strength, or power. 'Decomposition' is the process of decaying or rotting. Hence, 'Decomposition' is a fitting synonym.
• Growth: the process of increasing in size.
• Preservation: the action of preserving something.
• Flourish: to grow or develop in a healthy or vigorous way, especially as the result of a particularly favorable environment.