Final answer:
The words 'Inferior' and 'Substandard' are synonyms, as are the words 'Polite' and 'Courteous'. Therefore, 'Polite : Courteous' follow the same synonym relationship.
Step-by-step explanation:
The logical relationship between the words in bold (Inferior : Substandard) is that they are synonyms, meaning they have similar or the same meanings. Following the same logic, the pair that exhibits the same relationship is C. Polite : Courteous, as these also are synonyms. The other pairs either represent antonyms (B. Friend : Foe) or are unrelated in meaning (D. Smart : Shabby, E. Funny : Dull).