True or False: an in-line view can return multiple rows and columns.

An in-line view, also known as a subquery in the FROM clause, can indeed return multiple rows and columns. It effectively acts like a derived table within the SQL context, which allows it to be treated as a standard table.

When you use an in-line view, it is defined by a SELECT statement that can retrieve a combination of different columns and numerous rows based on the query conditions. This subquery can include various aggregations, joins, and filters, depending on how it is structured. After execution, the in-line view's result set can be utilized in the outer query as if it were a physical table, thus allowing the results to be manipulated, filtered, or joined further.

Considering this aspect, it is clear why stating that an in-line view can return multiple rows and columns is true. This capability is fundamental to SQL queries, and understanding this concept is necessary for effective data manipulation in SAS programming and SQL in general.