Once you have identified the key concepts of a topic or research question and thought of additional keywords

Once you have identified the key concepts of a topic or research question and thought of additional keywords (synonyms or related terms), the next step is to use a combination of key concepts and keywords to develop a __________.
Question options:

Boolean operator

search statement

subject heading

search heading

TYPE SOME PART OF QUESTION YOU ARE LOOKING FOR

.

.
acc week