Which of the following is the best type of module coupling?Select one:a.Control Couplingb.Stamp Couplingc.Data Couplingd.Content Coupling

To determine the best type of module coupling, let's first understand what each type of coupling means:

1. Control Coupling:

   • This occurs when one module controls the behavior of another by passing it information on what to do (e.g., passing a control flag).
   • It can lead to a situation where the control logic is spread across multiple modules, making the system harder to understand and maintain.

2. Stamp Coupling:

   • This occurs when modules share a composite data structure and use only a part of it.
   • It can lead to unnecessary dependencies between modules, as changes in the data structure can affect multiple modules.

3. Data Coupling:

   • This occurs when modules share data through, for example, parameters. Each datum is an elementary piece, and the modules are independent of each other.
   • This is generally considered a good practice because it minimizes dependencies and makes the system more modular and easier to maintain.

4. Content Coupling:

   • This occurs when one module directly accesses or modifies the content of another module.
   • This is the highest level of coupling and is generally considered very poor practice because it creates strong dependencies and makes the system very difficult to maintain and understand.

Given these definitions, the best type of module coupling is:

c. Data Coupling

Data coupling is the most desirable because it promotes modularity and reduces dependencies between modules, making the system easier to understand, maintain, and extend.