Explanation:

Let’s break this down:

- Option 1: At least 3 days

This is the right one. The rules under Companies (Management and Administration) Rules, 2014 say that remote e-voting must be open for at least 3 days, and it has to close at 5:00 PM the day before the general meeting.

- Option 2: At least one week

This is too long. The law doesn’t require e-voting to be open for a full week. It just has to be open long enough for shareholders to participate, but a week is more than required.

- Option 3: At least one day

This is too short. The law specifically says not less than 3 days, so one day doesn’t meet the requirement.

- Option 4: At least one month

Way off. Keeping the e-voting open for a month isn’t practical, and nothing in the law suggests this.