Problem? Issue? Situation?
1). The government is doing all it can to resolve this situation / problem / issue ?
2). Unemployment is one issue / problem that I don't think we will eve be able to solve?
3). By the end of the meeting, we had resolved all of the issues / problems raised by staff.

Which one is correct? and why you chose that word?

Question

Problem? Issue? Situation?
1). The government is doing all it can to resolve this situation / problem / issue ?
2). Unemployment is one issue / problem that I don't think we will eve be able to solve?
3). By the end of the meeting, we had resolved all of the issues / problems raised by staff.

Which one is correct? and why you chose that word?

Answer

In these sentences, all the sentences you said are correct. :)

As a tip: issue, problem, and situation all have different meanings, so they can't always be used interchangeably like this.

Answer

1) Issue
2) Issue
3) Issues
The key words to look for are "solve" and "resolve".  When you are solving or resolving a problem, you use the word issue.  Remember:  if it needs to be solved, it will be solved, or it was solved, choose issue.  Hope this helps!

Answer

I think

1. problem
-> bc: "issue" can be treated separately. Problems must be handled openly, to solve them in the capacity of governments or businesses. Subject here is "the goverment" 
2. problem
-> bc: "issue" only a slight effect but also cause personal annoyance; but,  "problem" making others suffer. And "unemployment" cause a lots impacts on society and people are influenced.
3. problem
-> bc: the same reason with 1st.