Most small four-stroke gasoline engines use only __ lubrication to lubricate all of the parts on the engine, including the crankshaft bearing, carnshaft, and lifters. a. Force-feed b. Drip c. Dry d. Splash

## Step 1<br />The problem is asking us to identify the type of lubrication system used in most small four-stroke gasoline engines. The options provided are force-feed, drip, dry, and splash.<br /><br />## Step 2<br />The splash lubrication system is the most common type of lubrication system used in small four-stroke gasoline engines. In this system, oil is splashed onto the moving parts of the engine, providing lubrication.<br /><br />## Step 3<br />The other options, force-feed, drip, and dry, are not typically used in small four-stroke gasoline engines. Force-feed lubrication systems are more complex and are usually found in larger engines. Drip lubrication systems are not a common type of lubrication system, and dry lubrication systems use solid lubricants rather than liquid oil.