How much does 100 gallons of milk weigh approximately?

The weight of milk is typically around 8.6 pounds per gallon. To determine the approximate weight of 100 gallons of milk, you would multiply the number of gallons by the weight per gallon. So, calculating this gives:

100 gallons x 8.6 pounds/gallon = 860 pounds.

This calculation shows that 860 pounds is the expected weight for 100 gallons of milk, making it the most accurate choice among the options given. Other weights in the choices do not align with this calculation and would therefore be less accurate representations of the weight of 100 gallons of milk.