Answer: B. belonged to a child-bed
Explanation/Evidence:
Dialect refers to a pattern of speech used in a particular region or area of a country, and it involves the spelling, sounds, grammar and pronunciation used by a particular group of people and it distinguishes them from other people around them.
Also, all the other answer choices belong in the regular meanings, whereas belonged to child-bed is reserved for a particular area which makes it diffrent and a dialect.