Correct option is A
The correct option is (a) “kennel”. The sentence talks about how the dad will teach the speaker how to make a small shelter for their dog.
A “kennel” is a small shelter for a dog or a similar animal, and hence it is the most appropriate one-word substitute for the given group of words.
Meanings of other 3 options are as follows:
Canal - means an artificial waterway constructed for navigation or irrigation purposes.
Burrow - means a hole or tunnel dug in the ground by an animal for shelter or habitation.
Shed - means a simple roofed structure used for garden storage or as a workshop.