which tract in the direct motor pathway has axons which terminate in the nuclei of nine pair of cranial nerves

Corticobulbar Tract

Explanation:

It should be understood that the corticobulbar tract (CBT) arises mainly from the lateral portion of the part known as primary motor cortex. The corticobulbal tract axons is discovered to have projected from the genu of the internal capsule into the other three parts known as cerebral peduncle, the basis pontis, and the medullary pyramids on the ipsilateral side.

The corticobulbar tract is responsible for carrying motor information from motor cortex to the muscles of head, leg.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.