Correct Answer & Explanation
Option B
• 'FLUCTUATE' means to rise and fall irregularly in number or amount.
• 'Vacillate' means to waver between different opinions or actions, or to be indecisive and unsteady, making it the correct synonym.
• Meaning of other options:
• Stabilize: Make or become unlikely to change or fail.
• Consolidate: Make something physically stronger or more solid.
• Stagnate: Cease to flow or move; become inactive.