The IRS has a handy quiz tool that asks you questions and usually helps identify if someone can be claimed as a dependent.
There is a button at the bottom of the IRS page to "Begin" the quiz.
https://www.irs.gov/help/ita/whom-may-i-claim-as-a-dependent
In most cases, dependents have to have either a valid social security number or other valid taxpayer identification number to be claimed as a dependent.
~ Amy ~
