The correct answer is D. the.
The article “the” is used to refer to a specific person or thing that has already been mentioned or is known to the listener or reader. In this case, the secretary is a specific person who has already been mentioned, so the article “the” is used.
The article “a” is used to refer to a general person or thing that has not been mentioned or is not known to the listener or reader. In this case, the secretary is a specific person who has already been mentioned, so the article “a” is not used.
The article “an” is used before singular nouns that begin with a vowel sound. In this case, the word “information” begins with a consonant sound, so the article “an” is not used.
The article “many” is used to refer to a large number of people or things. In this case, the secretary is a specific person, so the article “many” is not used.