What information is required for an in-text citation with one author in APA style?

In APA style, an in-text citation for a work by one author requires the author's last name followed by the year of publication. This format provides essential information for readers to locate the complete citation in the reference list, ensuring clarity and proper attribution of the source. The last name identifies the author, and the publication year indicates when the work was released, which is important for contextualizing the information provided in the text.

In contrast to the correct answer, other options do not align with APA requirements. The title of the work is not included in the in-text citation for an authored work, and using the author's first name is not standard practice since APA format typically uses surnames. Lastly, summarizing the work is not necessary for the citation; the citation serves as a direct reference to the original source instead. Thus, using the author's last name and the year of publication maintains the concise format intended by APA guidelines.