Uttering words in a low tone. Like if talking by to themselves.
Answer:
There is a written record that somebody named “Ahlers” knew about Frank's hiding spot and how they had gone into hiding. Ahlers reportedly told his older brother, Cas, that he had betrayed the Franks during the war.
Explanation:
i believe it is Avoid plagiarism
I believe the answer is "not credible."
Hope this helped! =)