Considering the situation described above, and given that Alicia does not wish to file a joint 2020 return, and she has no qualifying child or qualifying relative. The filing status Alicia should use is "Married Filing Separately."
Married Filing Separately is a tax status taken by married couples who prefer to record their incomes, exemptions, and deductions on separate tax returns.
Given that Alicia and her husband are still legally married, and she doesn't want to file a joint 2020 return, the other available option is "Married Filing Separately."
Hence, in this case, it is concluded that the correct answer is "Married Filing Separately."
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