At the end of the story, Madame Forestier reveals to Mathilde that the necklace was an imitation. Is it significant that neither Mathilde nor anyone at the party noticed that the necklace was a fake

This revelation is quite significant since it symbolizes the story's great irony.

Explanation:

This irony stands in the fact that Mathilde had to work and even went in debt in order to get a replacement for a piece of jewelry that was a fake. The necklace looks like it has value but is truly just an imitation, which in turn symbolized Mathilde not being happy with her life and with what she had in the first place.

the answer is the second one.

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation: