the answer would be frown. happy, frown, and grin are similes to smile, and frown is an antonym. break is an antonym for repair, meaning frown is the correct answer.
I think that Hellen Keller was a very loud and outspoken person for someone her age and with her conditions. My thought about this is that it is what she uses to try and comunicate with other people to make sure that they would still notice her.
candy isn't healthy, fruit can go bad quickly, and candy doesn't require refrigeration, but candy and fruit are both easily available so that's the answer