Answer:The detail that best reveals Freddy's motivation for helping Eleanor find a suitor is: "I shall never, never marry before Eleanor. It would mortify her-I know it would-and make her feel that she herself had failed." (from line 5)
Step-by-step explanation:
This statement shows that Freddy's primary motivation for helping Eleanor find a suitor is to ensure that she doesn't feel like a failure because she's still single. Freddy cares about Eleanor's feelings and wants to make sure that she doesn't feel left behind or less valued because she hasn't found someone to marry yet. This detail also suggests that Freddy is a kind and thoughtful person who puts the needs and feelings of others before her own.