Solution:(a) I like my puppies, Mac and Matt, but I like Matt better. (Correct)(b) I like my puppies, Mac and Matt, but I like Matt the best. (Incorrect Degree)
(c) I like my puppies, Mac and Matt, but I like Matt much (Incorrect Degree)
(d) I like my puppies, Mac and Matt, but I like Matt most. (Incorrect Degree)