The adverse effects of burning high sulfur fuel can be compensated for by using a cylinder oil having sufficient __________.

Correct Answer: Option B — alkalinity

High sulfur fuels produce corrosive acidic combustion byproducts that rapidly attack cylinder liners and piston rings. Cylinder lubricating oils with a high Total Base Number (TBN), representing reserve alkalinity, are mandatory to chemically neutralize these acids and prevent accelerated corrosive wear under high-load marine diesel operations.