Select whichever preposition or determiner you consider the most appropriate for the blank space.
She has always been very polity _________ me.

Correct option is C

The word that can be filled in the blank is ‘to’ to make the sentence grammatically and contextually correct.
• ‘To’ is used to indicate direction or place as an object of attention or consideration.
• As per the context, the word ‘to’ fits very well & hence, it is the correct option.
Meanings of other given words:
• About - used for motion in a closed space.
• By - used to show the means of achieving something.
• Of - used to indicate belonging to, relating to, or connected with.
• Thus, all the other given words have different meanings and do not fit in the context of the sentence.