Final answer:
A few individuals survive Ragnarök, including Odin's sons Vali and Vidarr, Thor's sons Modi and Magni, and two humans, Lif and Lifthrasir, who repopulate the world after hiding in Yggdrasil.
Step-by-step explanation:
The correct answer to the question of who survives Ragnarök is: Option 2: Only a few individuals survive Ragnarök. According to Norse mythology, six specific individuals are mentioned as survivors of the cataclysmic event of Ragnarök. These survivors include a few gods such as Odin's sons Vali and Vidarr, along with Thor's sons Modi and Magni. Two humans, Lif and Lifthrasir, also survive by hiding in the world tree Yggdrasil and emerge to repopulate the world.