Answer: The author chooses to include descriptions such as “the old man’s cheeks were gray and brows were knotted in a dark frown” to infer that the old man is worried.
Step-by-step explanation:
This excerpt is from a book by Charles Boardman known as: The Wild Dog of Caucomgomoc.
The old man being described in the excerpt (Gordon Low) was worried because his eight years old grandson, Ned Low went missing.
The author describes the old man, Gordon as having gray cheeks and brows knotted in a dark frown because he wants to infer that the old man is seriously worried about his grandson’s whereabouts.