Answer:
The word "hear" is a verb (transitive).
Explanation:
A sentence has many different parts such as: subject, verb, direct object, indirect object, appositive, predicate nominative, object of preposition, objection of gerund, etc.
However, in the case above, the word "hear" acts as a transitive verb in the sentence. A transitive verb needs a direct object or a receiver of an action and in the example above, the direct object is "that Mark got a scholarship" (noun clause).
Direct objects act as a "noun," thus they can be a noun, pronoun, a noun phrase or a noun clause.