Give a simple answer and explanation​

You should see a little paperclip on the bottom left corner you click on it and it gives you two options (camera and gallery)

Ireally like network models.

Well first we would need the actual diagram. perhaps you missed it?

The development plan is the way that the company grows and the levels the employee goes up. if the plan is public to many people using an ebi server than it will rank up the employee. this being said a would be the best answer.