16.)A vehicle.has blue.smoke from the tail pipe at ide : Which of these could be the cause? A.Seized-oil-control-rings Coolantleakinto the shorted fuelinjector D. A leaking-vacuum-hose

## Step 1<br />The problem presents a situation where a vehicle is emitting blue smoke from the tail pipe. The task is to identify the possible cause of this issue from the given options.<br /><br />## Step 2<br />Blue smoke from a vehicle's tail pipe typically indicates that the engine oil is being burned. This can occur when the oil control rings in the engine seize up. The oil control rings are responsible for scraping excess oil from the cylinder walls and returning it to the oil pan. If these rings seize up, the oil can be drawn into the combustion chamber and burned, resulting in blue smoke.<br /><br />## Step 3<br />The other options provided, such as a coolant leak into the fuel injector, a shorted fuel injector, or a leaking vacuum hose, would not typically result in blue smoke. These issues would have different symptoms and would not directly cause the engine oil to be burned.