Answer:
Professor McGonagall initially takes five points away from Hermione but later rewards her ten points for her bravery, effectively giving her five points.
Step-by-step explanation:
Professor McGonagall's actions towards Hermione in J.K. Rowling's "Harry Potter and the Sorcerer's Stone" are somewhat complex, as she initially penalizes Hermione for her actions but later rewards her for her bravery.
Initial Penalization:
In Chapter 10, "The Mirror of Erised," Hermione takes it upon herself to investigate the troll that has been spotted in the castle.
She sneaks out of bed after curfew and goes to the girls' bathroom, where she believes the troll is hiding.
However, she is caught by Professor McGonagall, who reprimands her for breaking the rules and being out of bed after curfew.
McGonagall takes five points away from Gryffindor for Hermione's misbehavior.
Later Reward:
Despite initially penalizing Hermione, Professor McGonagall recognizes her bravery and selflessness when she learns that Hermione led Harry and Ron to the troll and helped them defeat it.
McGonagall acknowledges that Hermione put herself in danger to save her friends and gives her ten points for her courage.
This effectively cancels out the five points she had previously taken away.
Thus, Professor McGonagall initially takes five points from Hermione for breaking curfew but later rewards her with ten points for her bravery in defeating the troll.