Final answer:
Woodman Gruff withdraws the accusation of witchcraft out of guilt and remorse, showcasing his conscience and sense of justice.
Step-by-step explanation:
In "The Witch of Blackbird Pond," Woodman Gruff withdraws the accusation of witchcraft a) out of guilt and remorse, realizing the accusation was unfounded and unjust. This action showcases his conscience and sense of justice. The evidence supporting this can be found in the text when Gruff throws his companion the maple stick and disappears, leaving the young man to reflect on his guilty purpose. Additionally, the text mentions that Gruff hears a hymn from a distance and recognizes the tune as a familiar one from the village meeting-house choir, further suggesting that he withdraws the accusation based on his rational sense of justice.