Correct Answer: The municipal corporation has demarcated walking zones using paints and cones.

Solution : The correct option is the second option.

Explanation:
Active voice in a sentence places the subject at the forefront, acting, while the object follows as the receiver of that action. In an active sentence, the subject is the doer of the action.
The structure of an active sentence in the case of the present perfect tense is, "Subject + has + past participle of the main verb + object + additional information".

Therefore, the active voice of the sentence would be, " The municipal corporation has demarcated walking zones using paints and cones".