Fred bought 4 liters of liquid laundry detergent 3250 mL of fabric softener and 2.5 L of bleach which date that is true

the complete question in the attached figure

we know that

Fred bought
4 liters of liquid laundry detergent 
3250 mL of fabric softener------------> 3250/1000-------> 3.25 liters
2.5 L of bleach-----------> 2.5 liters

then
statements

4a. Fred bought 75 milliliters more fabric softener than bleach
3.25-2.5-------> 0.75 liters--------> 750 mi
the statement is false

4b. Fred brought 1.75 liters more laundry detergent than bleach
4-2.5---------> 1.5 liters
the statement is false

4c. Fred brought 750 milliliters more fabric softener than bleach. 
3.25-2.5-------> 0.75 liters-------> 750 ml
the statement is true

4d. Fred brought 150 milliliters more laundry detergent than bleach.
4-2.5--------> 1.5 liters---------> 1500 ml
the statement is false

4e. Fred bought 0.75 liters more laundry detergent than fabric softener.
4-3.25--------> 0.75 liters
the statement is true