Final answer:
The best translation of the sentence 'Meine Schwester isst keinen Fisch' is 'My sister doesn't eat fish.'
Step-by-step explanation:
The best translation of the sentence 'Meine Schwester isst keinen Fisch' is 'My sister doesn't eat fish.' The sentence includes the word 'keinen,' which is the negation of 'ein,' meaning 'a' or 'an.' So, 'keinen Fisch' means 'no fish' or 'not a fish.' Therefore, the correct translation is 'My sister doesn't eat fish.'
Learn more about Translation of German sentences