Need one more course for my masters in applied math

which one should I take
>complex fluids
>advanced perturbation methods
>FE methods for PDEs
>Industrial mathetical modelling
>greens functions and calculus of variations
Supervisor said I can take any

My research is on low Re flows of non netwonian fluids, if that helps.

>american whiskey is still banned in my shithole province
I bought a michters 10 rye before the tariff bullshit and haven't opened it yet. Should I just try to sell it?