In English language we often use linking or transition signals to connect our ideas and make sentences more cohesive. Knowing that these signals could appear as words or whole phrases, which of the following alternatives could better connect the next two paragraphs?

There was one document that said he had no known father or mother. Another provided the name of a biological mother and her address. A third document specified the baby had no living relatives, and a fourth stated that he had been given up for adoption days after birth. Yet another document said he had been given up for adoption when he was two years old.

…………., Thyden says it was not until a few months ago, when his wife read about the case of Scott Lieberman, that he became actively engaged in uncovering the truth about his adoption.