Virginia Gov. Glenn Youngkin is exploring options to respond to school districts defying his executive order, which gives parents the final say on whether their children wear a mask at school. Less than a week into Youngkin’s first term as governor, several major public school districts have already announced that they will not allow parents to opt their children out of mask requirements in schools. Just hours after the Republican governor signed the executive order, school district officials in Arlington and Fairfax counties and the city of Alexandria sent messages to families, saying there will be no change to their mask policies. Although Youngkin said that he hopes the school districts will spend this next week reconsidering their decisions, he also told them to be prepared in the meantime for the pushback from his administration. “Get prepared,” Youngkin said over the weekend, “because we granted parents the option to decide …