 Which of these is a reason that Mary would have wanted Sammy to replace Phil?
Transcriber's Note: This etext was produced from Astounding Science Fiction December 1955. Phil Conover pulled the zipper of his flight suit up the front of his long, thin body and came into the living room. Yes, I'm sure you did," she said, finishing the ritual; but her voice broke, and she turned her head away. If anything could go wrong, they wouldn't be sending me; you know that. "Mary, you know I can't back out now. Nothing would ever be right with me again if I didn't go. No matter how much I love you, I just couldn't take that, Phil. "I wish you had told me this a long time ago, Mary," Phil said.
 She thought she could protect herself if someone else went.
 She knows that Sammy is more careful, and would have a greater chance at mission success.  She thought she could protect herself if someone else went.  She thought that Sammy was more qualified.  She thought but his lack of family showed his dedication to his job.