Final answer:
The fallacy in the argument is A) Appeal to Ignorance. The reasoner is using the lack of evidence for God's existence to conclude that God does not exist.
Step-by-step explanation:
The fallacy in the argument is A) Appeal to Ignorance. The reasoner is using the lack of evidence for God's existence to conclude that God does not exist. This reasoning is flawed because the absence of evidence is not evidence of absence. Just because we do not have evidence for something does not mean that thing does not exist.