Fill in the blank given below using the correct idiom.
Sarah's calm demeanor during the crisis put her _______________, as she effectively guided the team to a solution.
The phrase "in good stead" means to be beneficial or advantageous in the future. (A) on account of: Because of; due to a specific reason. (B) in good stead: To be beneficial or advantageous in the future. (C) under no account: Under no circumstances; absolutely not. (D) a Fidus Achates: A loyal and trusted friend.