Answer:To find out how much milk Rudy bought on May 8th, we need to first calculate three times the amount of milk he bought on May 5th.On May 5th, Rudy bought 4 pints of milk.On May 8th, he bought three times as much: pints.Next, we need to convert pints into gallons to figure out which of the given choices is correct.There are 8 pints in 1 gallon.So, to convert 12 pints to gallons:12 \, \text{pints} \div 8 \, \text{pints per gallon} = 1.5 \, \text{gallons}.Therefore, Rudy bought more than a gallon of milk on May 8th.The correct answer is c. more than a gallon.