The answer is "B. The language is figurative' blackberries cannot recognize human faces. "
The explanation for this answer is that the author used the language file "personification" in the passage "Th 'very blackberries an' heatherbells knows him".
Personification is the figure of language that consists of attributing to inanimate objects or irrational beings, feelings or actions proper to human beings. In this text, blackberries and heather are characteristic of humans. So the correct answer is the letter B.