Translation:This is my final answer.
"Esta é a minha" should be accepted, right?
I thought I heard "a minha" in the regular speed version, so I wrote it and got it wrong. When I listened to the slow version, it's definitely not there. Duo is inconsistent about using definite articles with possessives.
Shouldn't this sentence be "Isto é minha resposta definitiva" since the 'this' is replaceing the response itself and not referring to a subject within the sentence?