Question

in 1908, the supreme court ruled in muller v. oregon that
northern securities had a monopoly that should be broken up
states could not decide the length of a workday.
states could regulate grain storage fees.
state laws could limit working hours for women.

Explanation:

Muller v. Oregon (1908) upheld an Oregon law limiting women's working hours, citing women's physical differences and need for protection. Other options relate to different cases: Northern Securities (monopoly breakup), Lochner (workday length restrictions), Munn v. Illinois (grain storage fees).

Answer:

state laws could limit working hours for women.