Answer:
Where are the options? If its a multiple choice question type down all the choices so I/others can choose. :)
Explanation:
The politicians have been discussing the social program for the last month.
Are discussing is present continuous, have discussed is present perfect, discuss is present simple.
When grocery shopping, you should have a list of needed items.
Hope this helps. :)
It is the first choice (A.) the long deployment has been very difficult on those who serve their country.
Hope I could help ya