Ribot's law states that:

(1 point)
• memories are never lost; they are simply misplaced
• memory loss can be caused by a riboflavin deficiency
• the oldest memories are the most resilient
• the newest memories are the most resilient

None of the given options accurately state Ribot's law. Ribot's law is a psychological principle that suggests that the memories formed earlier in life are generally more resistant to damage or forgetting than those formed more recently. Therefore, the correct statement would be: "the oldest memories are the most resilient."