To answer this question, we need to understand the concept of joining tables in a database.
When working with databases, it is possible to join multiple tables together based on a common column or key. This allows us to combine data from different tables into a single result set.
The maximum number of tables that can be joined depends on the database system and its limitations. However, in general, there is no hard limit on the number of tables that can be joined in a single query.
Therefore, none of the options given (A, B, C, or D) accurately represents the maximum number of tables that can be joined.