Which statement indicates correct usage of a running head and header in APA format?

The correct answer highlights the proper format for a running head and header in APA style. In APA format, the running head is a shortened version of the title of your paper, and it should be positioned in the upper left margin of every page. Alongside this, the page number appears in the upper right margin. This specific arrangement ensures that readers can easily identify the title of the paper and locate the page number, which is essential for navigation, especially across multiple pages.

The other options suggest formats that do not align with current APA guidelines. For instance, insisting on the words "Running head" appearing on every page or requiring that label is outdated, as the phrase is no longer necessary in the running head after the title page. Additionally, stating that the running head should be centered on the title page contradicts the guidelines, which specify that the running head must be flush left and the page number flush right. Understanding these details is crucial for adhering to APA formatting requirements effectively.