17.
The answer is: C
Explanation
The correct option is C: To run away.
The idiom "to take to one's heels" means to run away or flee from a situation, often quickly and in a state of panic or urgency. It suggests a swift departure, usually due to fear or a need to escape.
The other options do not fit the meaning of this idiom:
A: To Walk Slowly is the opposite of what the idiom implies.
B: To Hop and Jump does not convey the idea of fleeing or escaping.
D: To March forward suggests moving ahead with purpose, which is not the same as running away.