Final answer:
To allow parents to see the new calendar, Mr. Jones must make it public.
Step-by-step explanation:
To allow parents to see the new calendar, Mr. Jones must make it Public. By making the calendar public, it means that it can be accessed and viewed by anyone, including parents. This could be done by publishing the calendar on a school website or sending it out through email or other communication channels. Making it public ensures that parents have the opportunity to see and be aware of the upcoming events and important dates.