What does he eat Omar?

Do you mean:

• What does Omar eat? (Ask about Omar’s diet in general)
• What does he eat? (If you’re already talking about him as “he”)
• What does he eat, Omar? (Directly addressing Omar)

Notes:

• In present simple questions, form is: What does + subject (Omar/he) + base verb (eat)?
• If you’re addressing Omar directly, use a comma: What does he eat, Omar?

Examples:

• What does Omar eat? → He eats vegetables and rice.
• What does he eat? → He eats bread and eggs for breakfast.
• What does he eat, Omar? → He eats fish and salad most days.

If you share a bit more context (Are you asking about grammar or trying to answer for a specific Omar?), I can tailor more precisely.