Final answer:
Double-spacing and hanging indentation are formatting requirements for the references section in an APA-style manuscript.
Step-by-step explanation:
A) Double-spacing:
In an APA-style manuscript, the references section should be double-spaced. This means that there should be a blank line of space between each line of text.
C) Hanging indentation:
The references section in an APA-style manuscript should have a hanging indentation. This means that the first line of each reference should be flush with the left margin, and all subsequent lines should be indented by half an inch.