For Grant's second research question, he could ask, "What challenges did Jason face on his quest for the Golden Fleece?" This question builds on his exploration of Jason's early life by delving into the pivotal events that shaped his journey to greatness.
The most credible source for research in this case would be a book about Greek mythology. Books typically undergo rigorous editorial processes and offer well-researched, detailed accounts of mythological figures, ensuring a more reliable and comprehensive understanding of Jason's challenges and accomplishments compared to a wiki page, which can vary in accuracy and depth of information.