In the Relationship window, related fields from each table are connected by a(n) _______________. A. default field B. linking tables C. index D. join line

The correct answer is: D. join line

A join line is a line that connects related fields from two tables in the Relationship window. It is used to create a relationship between two tables, which allows you to join data from the two tables together.

A default field is a field that is automatically populated with a value when a new record is created.

A linking table is a table that contains a field that is common to two other tables. This field is used to create a relationship between the two tables.

An index is a data structure that is used to improve the performance of queries. It is created on a field or fields that are frequently used in queries.