It would be MnSO4
The (II) lets you know it’s the form with a 2+ charge and Sulfate has a 2- charge
These will cancel out making it plain MnSO4
If it was manganese (iii) sulfide the answer would be Mn2(SO4)3
Glucose molecule has 6 carbon atoms
I believe its C because 7.5 would be considered a base and when acid it’s added it’s PH neutralizes the solution
