After Marley's ghost leaves, Scrooge is left wondering whether the experience was real or imagined. Then the clock peals the hour of one o'clock and another being appears in Scrooge's residence. He isn't as shocked as you might expect and notes all the details of the spirit's clothing and appearance. He "demands" to know who the spirit is, implying that he feels some sense of superiority in the situation.
Scrooge must feel comfortable with this spirit, as he "made bold to inquire what business brought [the spirit] there." His confidence is typical of his usual daily interactions; Scrooge is a keen businessman and is treating this much like a business meeting, not an opportunity for personal growth.
When the spirit tells Scrooge to follow him, Scrooge considers all the reasons he might protest: it isn't a good hour for walking; it's too cold outside; and he is already dressed for bed. However, even the businessman realizes that it would be "vain" to attempt to protest against this spirit.
(The entire section contains 4 answers and 891 words.)