An arguable issue. We can argue whether or not San Diego is a great place to live, but that San Diego is in Southern California is not something that is arguable. It is a verifiable fact.
A claim (which is really your conclusion). An argument requires that you make a decision about the issue, you must have a claim that something is (or is not) true.
Reasons for that claim (which in logic we call premises). Why do you believe the claim you are making about the issues. Here is an example of an argument:
San Diego California is a great place to live. The weather is comfortable year round. It doesn't get too hot in the summer. The beaches are beautiful, and there are lots of opportunities for cultural events.
Arguable Issue: Whether or not San Diego is a great place to live.
Claim (conclusion): San Diego is a great place to live.
Reasons (premises):
The weather is comfortable year round.
It doesn't get too hot in the summer.
The beaches are beautiful.
There are lots of opportunities for cultural events.
At this point we are not concerned with how good (or bad) an argument is; you need to focus on understanding the elements of argument.
Using any topic you like, create an argument that contains the three necessary elements. Your response should be 150 - 200 words in length. Review and critique at least two of your peers' arguments - not for content, but for argument elements.