What is 3 declarative sentences for hats, math, winter

Which of the following sentences is grammatically correct?

Which sentence in this excerpt from frances hodgson burnett’s a little princess shows indirect characterization? it was just then that miss minchin entered the room. she was very like her house, sara felt: tall and dull, and respectable and ugly. she had large, cold, fishy eyes, and a large, cold, fishy smile. it spread itself into a very large smile when she saw sara and captain crewe. she had heard a great many desirable things of the young soldier from the lady who had recommended her school to him. among other things, she had heard that he was a rich father who was willing to spend a great deal of money on his little daughter. "it will be a great privilege to have charge of such a beautiful and promising child, captain crewe," she said, taking sara's hand and stroking it. "lady meredith has told me of her unusual cleverness. a clever child is a great treasure in an establishment like mine."

Which verb or verb phrase signals an inappropriate shift in mood. a) will you let b) should first change c) must attend d) will be served