Issue in excel feeding of data into dropdowns


I am unable to feed the data from excel into drop downs.

Assume that there are 3 drop downs in the screen. I want to feed the data from 3 columns into these 3 drop downs.
I am not getting any idea how to pass on the value.

can some once pls help me with this issue for a single drop down so that I can replicate/reuse for the others?

Your help is greatly appreciated…

Thanks in advance.

Can some one please help with this issue. I am struggling for long.