Answer:
There is no correct answer
Step-by-step explanation:
I know this may not be exactly what you are looking for but each of these problems: women's suffrage, forest preservation and child labor are extremly to different groups of people but there are no less important than the other.
For women fighting for equality has been fundamental for the progress of society, forest preservation is a very important topic for many conservationalist and ecologist who are trying to commbat climate change and child labor should be an issue that is very important for everyone, no matter where this problems is happening.
So, I dont believe this question has a correct answer but it does have different angles