Question

you open a filing cabinet and notice that there are major grouping labels such as \personnel,\ \expenses,\ and \equipment,\ each containing many other folders within them. what are these grouping labels known as?
index titles
records
captions
surnames

Explanation:

Index titles are used to group related records or documents. Records are the individual items within the groups. Captions are short descriptions for images or tables. Surnames are family - names. Here, the major grouping labels are index titles.

Answer:

Index titles