Final answer:
Selection criteria placed in different rows in a query design grid indicates an OR operator, broadening the search to include records meeting any specified criteria.
Step-by-step explanation:
Selection criteria that are placed in different rows in the query design grid indicate an OR operator. The use of the OR operator in query design allows for a broader search result, including records that meet any of the specified criteria. In contrast, the AND operator is used to narrow search results by requiring that all specified criteria be met in each record included in the results. For instance, if you are looking for articles on 'education' OR 'technology', the results will include all articles that mention either term, providing a larger set of data.