This question is incomplete because the options are not given but I can answer it based on my knowledge
The correct answer is Point-by-point comparing and contrasting method.
Explanation
To write comparison texts we have two options, the first one is done by comparing aspect by aspect of an object, person, animal, event, or other with its similarities and differences. This method is known as Point by Point comparing and contrasting. Second, we can write a comparison and contrast text using the block method, in which all aspects are compared in a general way, that is, one is described first and then the other object, person, event, the animal involved in the comparison and conclusions are drawn about their differences and similarities.
According to the above, the text is an example of a Point-by-point comparing and contrasting method because the author is comparing his two dogs, but specifies an aspect-by-aspect comparison and contrast of each of his Ruby and Ruby dogs. Parker, for example, "Ruby's favorite pastime is running around the backyard ... Parker, on the other hand, prefers to sleep in the backyard".
