Final answer:
Lewis Hine published this photograph to expose unsafe working conditions in textile mills and highlight the lack of safety regulations in industrial settings.
Step-by-step explanation:
Lewis Hine published this photograph to expose unsafe working conditions in textile mills and to highlight the lack of safety regulations in industrial settings. The photograph shows child laborers standing on an industrial sewing machine, which indicates the dangerous working environment they were subjected to. The boy in the foreground not wearing shoes and standing close to stitching machines further emphasizes the hazardous conditions.