Question

In the necklace the fact that Madame Forestier loans Madame Loisel a necklace allows you to infer ___

Answer 1

The awnser is B because she trusts madame loisel

Answer 2

B. she trusts Madame Loisel is your best answer.

Most likely, since they were friends with a long relationship, you can infer that she trusts Madame Loisel because of her giving the necklace without hesitation. 

hope this helps