Data Normalization is

Select one:

$$a$.$ A tool that validates and improves a logical design to minimize the number of relationships.

$$ b$.$ A tool that validates and improves a logical design to minimize the number of tables.

C$.$ A tool that validates and improves a logical design to avoid unnecessary duplication of data.

d$.$ A tool that validates and improves a logical design to increase the efficiency of database$$queries$.$