Correct Answer & Explanation
Option B
• 'Flourish' means to grow or develop in a healthy or vigorous way, especially as the result of a favorable environment.
• 'Thrive' means to grow or develop well or vigorously, which is synonymous with 'flourish'.
• Options A, C, and D are antonyms or unrelated: 'Decline' and 'Wither' mean to decay or decrease, while 'Stagnate' means to cease developing.