The correct APA in-text citation for a direct quotation from page 56 of a source without the author's name mentioned in the text would be:
(Riordan, 2017, p. 56)
In APA style, the in-text citation includes the author's last name, the publication year, and the page number where the quotation is found. It's essential to use "p." before the page number, and the complete citation is enclosed in parentheses.
The correct format ensures proper credit to the source and allows readers to locate the specific information within the cited work. Therefore, in the given options, (Riordan, 2017, p. 56) is the accurate APA in-text citation for a direct quotation from page 56.
The probable question may be:
Why is it important to include the page number in an APA in-text citation for a direct quotation?