Use details that support your evidence
C) <span>a deep sense of patriotism</span>
The answer to the question stated above is <span>an unknown antecedent.</span>
Weak reference:
when a pronoun refers to an antecedent that has been suggested but not expressed
Indefinite reference:
the use of a pronoun that refers to no particular person or thing and which is not necessary to the meaning and structure of a sentence