Final answer:
Shelton Johnson's family did piecework at home, which is a form of employment where payment is made per piece produced rather than on an hourly wage basis.
Step-by-step explanation:
The question asks about the professions of Shelton Johnson's family. According to the given options, we can determine that Shelton Johnson's family did not work in agriculture or education. Instead, the correct answer from the provided choices is that they did piecework at home. This means that they were involved in a type of employment where they were paid per piece of work completed. The term 'piecework' often refers to a variety of tasks that can be conducted in a home setting, such as sewing, assembling, or other forms of handicraft.