Which of the options below contains a metaphor?
the fog was a heavy blanket laid out over the sleeping town.
empty windows glared out of the abandoned house as we crept by.
the child's overnight bag was a heavy as a sack of bricks.
the mango trees mocked us, dangling their sweet yellow fruit just out of our reach.

Ipronounced his name, offering him at the same time my hand: he took it, smiling and saying, “we shall do very well by-and-by.” then he laid me down, and addressing bessie, charged her to be very careful that i was not disturbed during the night. having given some further directions, and intimates that he should call again the next day, he departed; to my grief: i felt so sheltered and befriended while he sat in the chair near my pillow… (chapter 3) this passage, in which jane first meets the doctor, is an example of