Final answer:
The claim that in Letter 31 Screwtape reports the intelligence department has figured out God's Plan A is false; the demons do not understand God's plans in 'The Screwtape Letters'. Therefore, the given statement is false.
Step-by-step explanation:
The question refers to Letter 31 from The Screwtape Letters, a fictional book by C.S. Lewis where a senior demon, Screwtape, writes to his nephew and junior tempter, Wormwood, about various strategies for ensuring the dam nation of a human man known as 'the patient'. The question asks whether Screwtape reports that the 'intelligence department' has figured out God's so-called 'Plan A'. This is false; throughout the book, the demons are portrayed as fundamentally misunderstanding God and His love for humanity. There is no point in the book where Screwtape or any other demon finally figures out God's plans.
Therefore, the given statement is false.