If the throttle linkage is disconnected, what effect would this have on the carburetor?

When the throttle linkage is disconnected, the primary consequence is that the throttle plate within the carburetor will not operate, meaning the airflow into the engine is not being modulated according to the driver's input. This condition can prevent the appropriate amount of fuel from being drawn into the intake manifold because the carburetor relies on airflow to create the necessary vacuum for the fuel to be drawn from the float chamber, through the jets, and into the mixing chamber.

Without proper linkage, the throttle plate remains in a fixed position, typically allowing minimal airflow. This lack of airflow results in insufficient vacuum, which leads to little to no fuel being squirted or delivered into the carburetor for combustion. In essence, the engine will struggle to run as it cannot receive the correct fuel-air mixture required to maintain operation under normal driving conditions.

This scenario aligns with the correct answer, indicating that no fuel will squirt into the carburetor. The inability of the engine to receive an adequate supply of fuel due to the disconnected throttle linkage directly affects its operation and performance.