Correct Answer: Development

Solution : The correct choice is the first option.

Explanation : The word "progress" implies positive advancement, improvement, or development. In this context, it signifies movement and growth. "Development" is a suitable synonym as it also conveys the idea of progress, expansion, or the process of becoming more advanced.

The meanings of the other options are as follows:

• Diminishment : This word suggests a decrease or reduction.
• Halt : This word means to come to a stop or cease.
• Stagnation : This word means a lack of movement or growth, indicating a standstill rather than progress.