Correct Answer: Thwart

Solution : The correct choice is the third option.

Explanation:

Thwart and impede both refer to obstructing or hindering progress or movement. They both imply creating obstacles or difficulties that prevent something from happening or progressing smoothly.

The meanings of the other options are as follows:

• Sore: Painful, tender, or irritated.
• Stalwart: Strong, loyal, reliable, or determined.
• Stampede: A sudden, frenzied rush or movement, often by a group of animals or people.