We include in-text citation when we paraphrase, refer to, summarize, or quote from different sources. For each in-text citation in any write-up, a related entry must be present in the reference list.
This an example of APA in-text citation style. This structure uses writer’s last name with the year of publication. Direct quotations include page numbers as well. In case, page number is missing for an internet source, we utilize paragraph number.
Anyhow, in this case, "Dolan" is the author's last name and "175" is the page number of the quote. Therefore, option-"C" is correct, and others are not applicable.