Literally nothing scientific
Let's break the sentence structure down.
Alexander is the noun, built is the verb,city is the direct object, to honor is the infinitive phrase. So my guess is that the infinitive phrase's role is the adjective. I hope this is right. Have a good day!
<span> i beleive the answer is : D ) me; direct object
-Hope this helps.
</span>
The correct sentence is answer choice C.