Please help me to solve this question as detailed and clear as possible

Thanks

 

Then how about showing us your efforts thus far, "as detailed and clear as possible"?

 

This is not a homework service. We will not do your homework for you.
Show us what you have done.

 

I don't know where to start...

 

What have you learned about reactance and impedance?

 

I don't know where to start...

If that is truly the case, then you start by withdrawing from this course and taking the prerequisite courses over until you have learned the fundamentals well enough so that you do at least know where to start.

If that isn't truly the case, then describe what you do know about the circuit and how it is going to behave based on those fundamentals.