I believe the answer is that they separate syllables.
I hope this helps.
1b ) answer fertilization cause that's a sperm and egg cell
that answer Is c.fairytale
The blank should be filled with "cat". In other analogies, Siamese may be to Thailand, since it refers to the Thailand language, but in this particular analogy, the creator purposefully included hound is to dog before it, making the solver think of another pet, in which case can only be referring to the Siamese cat.