The lesion site associated with spastic dysarthria is the motor cortex in the brain's frontal lobe.
Step-by-step explanation:
Spastic dysarthria is a type of speech disorder characterized by stiff and weak muscles involved in speech production. The lesion site associated with spastic dysarthria is the motor cortex. The motor cortex is located in the frontal lobe of the brain, and it is responsible for controlling voluntary movements of skeletal muscles, including those involved in speech production.
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