Question

the person refused to grovel _____ the feet of his master.
a. on
b. about
c. at
d. by ​

Answer 1

The given blank is filled with the option (c) at as such: The person refused to grovel at the feet of his master.

Why is at the correct option?

• At is the correct option since it defines direction, position, etc.
  
  
• At is also a preposition.

• It has helped us to define the noun in the sentence.
  
  
• Prepositons are used before nouns, verbs, etc.