Answer: d. Married, filing separately.
Step-by-step explanation:
From the question, we are informed that Jeremy is married to Amy, who abandoned him in 2019 and that he has not seen or communicated with her since April of that year.
We are further told that he maintains a household in which their son, Evan, lives and that Evan is age 25 and earns over $6,000 each year.
For tax year 2020, Jeremy's filing status is married, filling separately. This is because we are told that Jeremy hasn't has not seen or communicated with her since April. Since they're not divorced, it means they're still married but filing separately.