Did you read all the explanations? It tells you what you need to do. Or is it a certain part you don’t get? Maybe I can help but I need to know what it is that your struggling with. Also you need a book.
All I know about that book is that it's set in small New England villages, so C would make sense but not 100% sure
It’s gotta be B, the other answers make sense while that one doesn’t at all...
Labor-saving devices are inventions that reduce the time and effort needed to perform or complete a task. Farm equipment, home appliances and construction equipment are examples of mechanical inventions that save time and physical labor.