What UML diagrams would be logical to use to describe an image recognition program?

Question

infographics

The program is a handwriting recognition tool with a graphical interface (Windows Forms). Developed in C# in Visual Studio. For recognition, the ensemble paradigm is used. The program has 7 modules. Each module has its own form.
Thus, the input of the program is an image with handwritten text, then the user selects a recognition method (you can choose one or several for the ensemble to work), and then the program performs recognition according to the selected algorithm and displays the result. The program needs to be trained first.
Question:
To demonstrate and protect this project, I need to describe it using UML diagrams.. You need 3 UML diagrams. I will probably use a class diagram and a component diagram. But I don't know what other UML diagram would be appropriate to use to describe the program.
The choice is:
- Activity
diagram - State
diagram - Sequence diagram
What would be appropriate and logical to use to describe the above program?

Answer 1

All three and draw