Answer:
Descriptive
Step-by-step explanation:
Descriptive headings are self-contained, which means that readers can skim through just the headings and subheadings and understand them without reading the rest of the document.
Descriptive headings highlights the important matter and main points of the content of the information and they are used to help readers to quickly spot the summary of the points to be communicated.
Furthermore, descriptive headings help readers find and understand information quickly which meets the required qualitative factors of the timeliness and comprehensibility of information.