Guessing lantern riddles, which started in the Song Dynasty, is one of the most important and popular activities during Lantern Festival.A. 正确B. 错误

本题考查对中国传统节日元宵节习俗相关知识的了解。解题思路是依据我们所掌握的关于元宵节习俗起源的常识来判断该陈述是否正确。
在历史文化中，猜灯谜这一活动确实起源于宋代，并且它是元宵节期间极为重要且广受欢迎的活动之一。所以“Guessing lantern riddles, which started in the Song Dynasty, is one of the most important and popular activities during Lantern Festival.”（猜灯谜始于宋代，是元宵节期间最重要、最受欢迎的活动之一）这一表述是符合事实的。