Final answer:
Argument 1 is more effective because it provides examples to support the claim.
Step-by-step explanation:
The argument that is more effective is Argument 1, which states that Frankenstein's characters prove that no one is completely good or evil and provides examples to support this claim. The examples given include Victor Frankenstein sacrificing his goals to bring the creature to life, but then rejecting the creature, which ultimately leads to the monster's evil actions. These examples demonstrate the complexity of the characters and how they exhibit both good and bad traits.