Answer: The passage that best supports the correct answer to Question 7 is D. "Quite young fellows, in fact, who are utterly incapable of foreseeing the consequences of even the least significant, far less a revolutionary, idea."
Explanation: This is because Question 7 asks about the speaker's attitude towards young people who are involved in revolutionary activities. The passage in D clearly shows that the speaker is dismissive of young people who are involved in revolutionary activities, believing that they are not capable of understanding the consequences of their actions.
The other passages do not provide as much support for the correct answer to Question 7. Passage A mentions that the official occasions designed to receive the refusal are not a formality, but this does not necessarily mean that the speaker is dismissive of young people who are involved in revolutionary activities. Passage B mentions that the speaker returns from these occasions not disappointed or tired, but this could be interpreted in a number of ways, and does not necessarily indicate the speaker's attitude towards young people who are involved in revolutionary activities. Passage C mentions that the speaker does not need to ask the opinion of anyone else about these things, but this could be interpreted as a sign of confidence or arrogance, and does not necessarily indicate the speaker's attitude towards young people who are involved in revolutionary activities.
Therefore, the passage that best supports the correct answer to Question 7 is D. "Quite young fellows, in fact, who are utterly incapable of foreseeing the consequences of even the least significant, far less a revolutionary, idea."