Answer:
23. C) recent high school graduates headed to college
24. D) advice for how a college freshman can get along with professors in a positive way
Explanation:
This article serves as an introductory text with some helpful tips on how to easier overcome the change of setting from high school to college and how to start freshman days the right way.
From the very start, the article introduces its purpose and targets the audience of recent high school graduetes about to start the college. This can be seen from the first sentence of the article and constant use of the pronoun "you" throughout the text.
The article is divided into several section, each with an appropriate heading and information that correspond to this heading.
If there existed a section entitled "Successfully Interacting with Professors" information written there would have to match the title.
Interaction mean having a communication or involvement with someone. Since this interaction should be successful, as the title suggests, then it should refer to getting along with the professors in a positive way.