Answer:
b. Planchet, dependable.
Step-by-step explanation:
Alexander Dumas's "The Three Musketeers" revolves around the story of three musketeers and one hopeful musketeer. The plot follows D'Artagnan and his life working with or helping the three musketeers defend the French king from the conniving Cardinal.
In this historical romance, Planchet is the servant of D'Artagnan. He is a loyal servant, reliable and brave but whose advice is never taken to heart by his master, especially in terms of trouble.
Thus, the correct answer is option b.