Answer:
C. The faithful servant wanted to give the Four Winds and the old woman the least he could in return.
Step-by-step explanation:
The excerpt shows that the faithful servant was very grateful for the favor which the four winds and the old woman had shown to him. He offered to give them some things to show his appreciation, but they apparently declined that.
So the least thing he could do for them since they would accept no other thing was to give them a few drops of the water of life which would make them become very fresh and young.