Answer :
To put the adverb "always" in its correct place in the sentence "What do you do on Fridays?", you should place it as follows:
- What do you always do on Fridays?
By placing "always" before the main verb "do," you create a grammatically correct sentence that properly modifies the action of doing something on Fridays. This structure ensures clarity and coherence in expressing the habitual action without disrupting the sentence flow.