Final answer:
The correct form of 'gehen' for the subject 'Du' is 'gehst.'
Step-by-step explanation:
The correct form of 'gehen' for the subject 'Du' in the sentence 'Du gehst jeden Tag einkaufen?' is 'gehst.'
When conjugating verbs in the second person singular form (Du), the verb takes the ending '-st' in the present tense. So, in this case, we use 'gehst' for 'gehen.'
For example, 'Du gehst zur Schule' means 'You go to school.'
Learn more about Conjugation of the verb 'gehen' for the subject 'Du' in German